#4278FF

#4278FF

Color Values

HEX

#4278FF

RGB

66, 120, 255

HSL

222.9, 100.0%, 62.9%

HSV

222.9, 74.1%, 100.0%

CMYK

74.1%, 52.9%, 0.0%, 0.0%

OKLCH

0.6118 0.2093 264.5

Properties

Cool Light Nearest: royalblue 1

Color Harmonies

Complementary

#4278FF

#FFC942

Analogous

#42D6FF

#6A42FF

#4278FF

Triadic

#4278FF

#FF4278

#78FF42

Split Complementary

#4278FF

#FF6A42

#D6FF42

Tetradic

#4278FF

#FF42D6

#FFC942

#42FF6A

Color Blindness Simulation

Original

#4278FF

Protanopia

#595ADE

Deuteranopia

#5652D6

Tritanopia

#45C5BF

Achromatopsia

#767676

CSS Usage

background-color: #4278FF;
color: #4278FF;
border-color: #4278FF;
Nearest Tailwind: Blue 600 #2563EB

Tailwind Shades

50
#F1F5FE
100
#DEE7FC
200
#B8CCFF
300
#85A7FF
400
#4278FF
500
#0049FF
600
#003ACC
700
#002FA3
800
#002480
900
#051E5C
950
#03133A

Contrast Checker

Text on white

3.92:1

AA Fail AAA Fail

Text on black

5.36:1

AA Pass AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026