#E4F227
Approximate name: Yellow
Technical formats
Color-space values for scientific work and cross-device comparison.
Practical formats
Ready to paste into CSS, Tailwind, iOS, Android, Flutter, and more.
Color analysis
Objective metrics: luminance, hue, saturation, temperature, and contrast.
Nearest name
Yellow
Relative luminance
0.801
Hue H
64°
Saturation S
89%
Lightness L
55%
Value V
95%
Temperature
Warm
Brightness
Light
Chroma
Vivid
Hue family
Yellow
Contrast on white: 1.23:1 (AA body Fail / AAA Fail)
Contrast on black: 17.03:1 (AA body Pass / AAA Pass)
Open full contrast tool →Color blindness simulator
Approximate appearance under common color-vision deficiencies (matrix simulation).
Normal vision
#e4f227
Protanopia
#eaea58
Deuteranopia
#e9e864
Tritanopia
#e57f87
Achromatopsia
#d7d7d7
Creative pairings
Hue-wheel harmonies and 10% shade/tint steps — not AI-generated copy.