Color of the dayNovember 30, 2025
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Chartreuse

#7fff00
Notes

Chartreuse (#7FFF00) is a true lime with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (90°, 100%, 50%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary indigo. For something softer, pull in its analogous neighbors on either side of the wheel. The vivid yellow-green of the French Carthusian liqueur, bottled at roughly this color since 1605. Matches Figma's default `chartreuse` and is the same hex Nike calls 'Volt' — the eye-grabbing accent used on Air Max and EA Sports kits. CSS's canonical `chartreuse` keyword (#7fff00) sits noticeably greener, closer to pure lime than to the liqueur.

HEX
#7fff00
RGB
rgb(127, 255, 0)
HSL
hsl(90, 100%, 50%)
HWB
hwb(90 0% 0%)
OKLCH
oklch(89.0% 0.265 136.0)
HSV
hsv(90, 100%, 100%)
LAB
lab(89.87% -68.07 85.78)
LCH
lch(89.87% 109.50 128.43)
CMYK
cmyk(50%, 0%, 100%, 0%)

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#7fff00
Original
#ffe800
Protanopia
#f8de39
Deuteranopia
#79f5d9
Tritanopia
#d1d1d1
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon White
1.30:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
16.21:1

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