Colormapped
Color reference

Chartreuse #7FFF00

Chartreuse is the standard CSS named color #7FFF00, a vivid yellow-green halfway between green and yellow in RGB terms.

Chartreuse is the CSS named color keyword chartreuse, standardized at #7FFF00 in sRGB.

Chartreuse #7FFF00 16.21:1 with black text

Color values

HEX#7FFF00
RGBrgb(127, 255, 0)
HSLhsl(90 100% 50%)
HSV90°, 100%, 100%
CMYK50%, 0%, 100%, 0%

HEX/RGB/HSL/HSV are deterministic sRGB representations. CMYK here is a mathematical approximation, not a printer-profile conversion.

Black or white text?

Black text 16.21:1 — AA normal text passes
White text 1.30:1 — AA normal text fails

AA normal text: black passes; white fails.

AA large text: black passes; white fails.

WCAG contrast thresholds use 4.5:1 for normal text and 3:1 for large text. Do not round a near-threshold result upward when testing conformance.

Tints and shades of Chartreuse

These steps are computed by RGB-mixing #7FFF00 toward white or black. They are generated values, not official named colors.

80% tint #E5FFCC
60% tint #CCFF99
40% tint #B2FF66
20% tint #99FF33
Base #7FFF00
20% shade #66CC00
40% shade #4C9900
60% shade #336600
80% shade #193300

Need more control? Use the Tints and Shades Generator or Lighten / Darken tool.

CSS usage

.example {
  color: #000000;
  background-color: chartreuse;
}

You can use either chartreuse or #7FFF00 in CSS; both resolve to the same sRGB color.