Color Glossary

A secondary color used sparingly to draw attention to key elements, creating visual emphasis against the dominant and neutral colors.

162 articles

A sufficient difference in luminance between foreground and background colors that ensures readability for users with visual impairments.

6 articles

A method of creating colors by combining different wavelengths of light, where adding all colors together produces white.

2 articles

A wide-gamut RGB color space developed by Adobe Systems, widely used in professional photography and print workflows.

32 articles

An additional data channel in a color value that specifies the color's transparency level, independent of its RGB components.

20 articles

Three or more colors that sit adjacent to each other on the color wheel, sharing a common hue family.

20 articles

The number of bits allocated per color channel, determining the precision of color values in a digital image.

5 articles

The documented psychological phenomenon where the color blue promotes trust, creativity, and calm, making it the world's most universally preferred color.

The specific colors officially associated with a company or organization, codified in brand guidelines to ensure consistent visual identity.

141 articles

The perceived intensity of light emitted or reflected by a color, where maximum brightness represents the purest form of the hue.

183 articles

The purity or intensity of a color, describing how vivid it appears compared to a neutral gray of the same lightness.

518 articles

A perceptually uniform color space defined by the CIE, where numerical distances between colors correspond to perceived visual differences.

2 articles

The foundational device-independent color space defined by the CIE in 1931, from which most other color spaces are derived.

3 articles

A subtractive color model using cyan, magenta, yellow, and key (black) inks, the standard for commercial printing.

513 articles

The learned connection between a specific color and a concept, emotion, or object, shaped by culture, experience, and context.

24 articles

A condition in which a person has reduced ability to distinguish between certain colors, affecting approximately 8% of males and 0.5% of females worldwide.

A design technique that uses large, solid areas of contrasting colors placed adjacent to each other without gradients or patterns.

2 articles

A set of colors selected from specific positions on the color wheel, analogous to musical chords where notes are chosen by interval.

The ability of the human visual system to perceive the color of objects as relatively constant despite changes in illumination conditions.

The number of bits used to represent each pixel's color, determining the total number of distinct colors available.

15 articles

The complete range of colors that a device, color space, or medium is capable of producing or representing.

49 articles

The creative process of adjusting colors in film, video, or photography to achieve a specific mood, style, or narrative effect.

16 articles

The principle that certain color combinations are inherently pleasing to the eye because of their structured relationship on the color wheel.

24 articles

The method of calculating intermediate colors between two endpoints, critical for gradients, animations, and color mixing.

8 articles

A system of hardware calibration, software settings, and ICC profiles that ensures consistent color reproduction across different devices and media.

28 articles

The process of combining two or more colors to produce a new color, either through additive or subtractive methods.

16 articles

The practice of assigning human-readable names to specific colors, from CSS named colors to scientific color dictionaries like ISCC-NBS.

10 articles

A curated set of colors chosen for a specific project, brand, or design system.

158 articles

An interactive tool that allows users to select colors visually from a spectrum, gradient, or palette rather than entering numeric values.

57 articles

The granularity with which color values can be specified and rendered, determined by the bit depth of the color system.

1 article

A data file that describes the color characteristics of a device or color space, enabling accurate color translation between systems.

The study of how colors influence human emotions, perceptions, behaviors, and decision-making.

32 articles

The visual and perceptual connections between colors based on their positions on the color wheel and their shared properties.

30 articles

A structured combination of colors based on their positions on the color wheel, following established harmony rules.

46 articles

The process of decomposing a full-color image into individual single-color layers (typically CMYK) for printing.

17 articles

A specific mathematical model that defines a range of representable colors using a coordinate system.

282 articles

The use of colors to represent abstract ideas, values, or concepts within a specific cultural, religious, or social context.

11 articles

The perceived warmth or coolness of a color, typically associated with reds and yellows (warm) or blues and greens (cool).

65 articles

The body of practical guidance and scientific principles for understanding how colors interact, combine, and affect human perception.

36 articles

The relative lightness or darkness of a color, independent of its hue or saturation.

98 articles

A circular diagram that organizes colors by their chromatic relationship, showing primary, secondary, and tertiary colors.

169 articles

Two colors positioned directly opposite each other on the color wheel, creating maximum contrast when paired.

60 articles

The ratio of relative luminance between two colors, measuring how distinguishable they are from each other.

223 articles

The psychological and physiological responses triggered by cool colors, including reduced arousal, perceived spaciousness, and enhanced concentration.

1 article

Colors in the blue, green, and violet families that evoke calm, distance, and serenity.

24 articles

A specification of the color appearance of light emitted by a source, measured in Kelvin and corresponding to the temperature of an ideal black-body radiator.

The built-in CSS functions for specifying colors, including rgb(), hsl(), oklch(), lab(), and color(), each using a different color model.

3 articles

A metric that quantifies the perceived difference between two colors, where smaller values indicate more similar colors.

A type of red-green color blindness caused by the absence of green-sensitive cone cells, making it difficult to distinguish between red and green hues.

56 articles

A wide-gamut color space developed by Apple, offering approximately 25% more colors than sRGB, used in modern displays.

81 articles

A technique that simulates colors outside a limited palette by interspersing pixels of available colors to create the illusion of intermediate shades.

The primary color that occupies the largest area of a design, setting the overall mood and visual tone.

43 articles

A design effect that maps the tonal range of an image to two colors instead of the full spectrum.

1 article

A minimalist design approach characterized by bright, fully saturated colors without gradients, shadows, or textures.

The process of converting colors from one color space to another when the destination cannot reproduce all colors from the source.

24 articles

A smooth, continuous transition between two or more colors across a defined space.

1018 articles

The documented psychological phenomenon where the color green reduces stress, enhances well-being, and signals growth, safety, and environmental awareness.

1 article

A six-character alphanumeric representation of a color using hexadecimal notation, prefixed with a hash symbol (#).

9 articles

A cylindrical color model that describes colors using hue, saturation, and lightness, designed to be intuitive for human color selection.

1336 articles

A cylindrical color model describing colors using hue, saturation, and value (brightness), commonly used in color pickers.

1 article

The attribute of a color that distinguishes it as red, blue, green, yellow, or any other chromatic color on the spectrum.

1489 articles

Text that is at least 18 points (24px) in regular weight or 14 points (approximately 18.66px) in bold weight, qualifying for relaxed contrast requirements under WCAG.

The perceived amount of light reflected by a color, ranging from black (0%) to white (100%).

717 articles

A photometric measure of the intensity of light emitted or reflected from a surface per unit area in a given direction.

258 articles

Google's comprehensive design system that defines a structured approach to color selection, theming, and application across UI components.

2 articles

The phenomenon where two colors appear identical under one lighting condition but different under another, despite having different spectral compositions.

41 articles

A color scheme derived from a single hue, using variations in saturation and lightness to create visual variety.

61 articles

Colors with low saturation that do not compete with other colors, including black, white, gray, beige, and muted earth tones.

18 articles

A modern perceptually uniform color space using lightness, chroma, and hue, designed to improve upon CIELAB for digital design workflows.

1089 articles

The degree to which a color or element blocks the content behind it, where 100% is fully opaque and 0% is fully transparent.

206 articles

A printing technique where one ink is printed directly on top of another rather than knocking out the underlying color.

23 articles

A proprietary standardized color matching system used in printing and manufacturing, where each color is assigned a unique identifying number.

6 articles

The specific white tone of the paper stock used in a print job, which influences the appearance of all printed colors.

17 articles

The first principle of WCAG, requiring that all information and user interface components are presentable to users in ways they can perceive.

6 articles

A color scheme using multiple distinct hues, creating a vibrant and diverse color palette.

Colors that cannot be created by mixing other colors and serve as the basis for all other color mixing.

82 articles

A printing method that reproduces full-color images by combining tiny dots of cyan, magenta, yellow, and black (CMYK) inks.

A type of red-green color blindness caused by the absence of red-sensitive cone cells, making reds appear dark and difficult to distinguish from greens and browns.

43 articles

The documented psychological phenomenon where the color red increases physiological arousal, attracts attention, and influences competitive and social behavior.

1 article

The luminance of a color normalized to a scale from 0 (black) to 1 (white), used as the basis for calculating contrast ratios.

47 articles

An additive color model that represents colors as combinations of red, green, and blue light, used in all digital screens.

1772 articles

The intensity or purity of a color, ranging from a vivid hue to a muted gray.

655 articles

Colors created by mixing two primary colors in equal proportions.

37 articles

A color produced by adding black to a pure hue, making it darker.

864 articles

An optical phenomenon where the perception of a color is altered by the colors surrounding it, making it appear different than it would in isolation.

15 articles

A color scheme using one base color and the two colors adjacent to its complement on the color wheel.

69 articles

A pre-mixed ink color printed as a single run, rather than being built from the four CMYK process inks.

97 articles

The standard RGB color space used by the vast majority of web content, monitors, and digital cameras.

502 articles

A method of creating colors by combining pigments, inks, or dyes that absorb certain wavelengths and reflect others, where combining all colors produces black.

2 articles

Colors produced by mixing a primary color with an adjacent secondary color on the color wheel.

19 articles

A color scheme using four colors arranged into two complementary pairs, forming a rectangle on the color wheel.

A color produced by adding white to a pure hue, making it lighter.

326 articles

A color produced by adding gray (both black and white) to a pure hue, reducing its saturation.

1317 articles

The property of a color or surface that allows light and background content to pass through it.

62 articles

Three colors evenly spaced at 120-degree intervals around the color wheel, forming an equilateral triangle.

5 articles

A rare type of blue-yellow color blindness caused by the absence of blue-sensitive cone cells, making it difficult to distinguish between blue and yellow hues.

28 articles

A color representation using 24 bits (8 bits per RGB channel) that provides approximately 16.7 million distinct colors.

The psychological and physiological responses triggered by warm colors, including increased arousal, perceived warmth, and heightened appetite.

1 article

Colors in the red, orange, and yellow families that evoke warmth, energy, and closeness.

23 articles

The enhanced conformance level of WCAG, requiring a contrast ratio of at least 7:1 for normal text and 4.5:1 for large text.

The standard conformance level of WCAG, requiring a contrast ratio of at least 4.5:1 for normal text and 3:1 for large text.

1 article

An international standard published by the W3C that defines how to make web content accessible to people with disabilities, including specific criteria for color contrast.

1 article

A palette of 216 colors that displayed consistently across all 8-bit computer monitors in the 1990s, using only values 00, 33, 66, 99, CC, and FF per channel.