#EFF247
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#EFF247
Color Values
#EFF247
239, 242, 71
61.1, 86.8%, 61.4%
61.1, 70.7%, 94.9%
1.2%, 0.0%, 70.7%, 5.1%
0.9302 0.1823 110.5
Properties
Color Psychology
Pure yellow is the most luminous color in the spectrum, instantly associated with sunshine, optimism, and alertness. It stimulates the nervous system and enhances concentration, which is why it appears on school buses and warning signs. Yellow demands attention faster than any other color.
Design Usage
Medium yellow is powerful for attention badges, star ratings, and highlight accents in otherwise neutral interfaces. It is one of the hardest colors to use as a primary brand color because of contrast limitations against white. Dark text on yellow achieves strong readability, making it effective for caution banners.
Color Harmonies
Color Blindness Simulation
CSS Usage
background-color: #EFF247;
color: #EFF247;
border-color: #EFF247;
Yellow 300
#FDE047
Tailwind Shades
Contrast Checker
Text on white
1.2:1
Text on black
17.46:1
Compare With
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Frequently Asked Questions
What are the RGB, HSL, and CMYK values of #EFF247?
RGB(239, 242, 71) · HSL(61.1, 86.8%, 61.4%) · CMYK(1.2%, 0.0%, 70.7%, 5.1%)
Does #EFF247 meet WCAG contrast on white?
1.2:1 — WCAG AA Fail, AAA Fail for normal text.
What text color is readable on #EFF247?
Use 000000 text on a #EFF247 background; contrast on black is 17.46:1.