#638D10#638D10

#638D10 is a mid, vivid yellow-green. Relative luminance 0.217; OKLCH L 59.1% C 0.149 H 128.1°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#638D10
RGB	rgb(99, 141, 16)
HSL	hsl(80, 80%, 31%)
HSV	hsv(80, 89%, 55%)
CMYK	cmyk(29.8%, 0%, 88.7%, 44.7%)
CIE-LAB	lab(53.75, -31.87, 54.28)
CIE-LCH	lch(53.75, 62.95, 120.42°)
OKLab	oklab(59.06% -0.0921 0.1175)
OKLCH	oklch(59.06% 0.149 128.1)
XYZ	xyz(14.7640, 21.7394, 3.9084)
Luminance	0.2174 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D10 #3A108D

analogous

#8D7810 #638D10 #248D10

triadic

#638D10 #10638D #8D1063

tetradic

#638D10 #108D78 #3A108D #8D1024

square

#638D10 #108D78 #3A108D #8D1024

split-complementary

#638D10 #10248D #78108D

monochromatic

#161F04 #3C560A #638D10 #8AC416 #AAE730

Accessibility & contrast

On white

3.93

#638D10 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#638D10 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D10

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D10	#FFFFFF	#000000	##000000
##638D10	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8F8021

Tritanopia (blue-blind)

#678678

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #638d10;
/* rgb */ color: rgb(99, 141, 16);
/* oklch */ color: oklch(59.1% 0.149 128.1);

Tailwind

colors: {
  custom: {
    50: '#94ae5e',
    500: '#638d10',
    950: '#000000',
  },
}

SCSS

$custom: #638d10;
$custom-light: #94ae5e;
$custom-dark: #000000;

JSON

{
  "hex": "#638d10",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 16
  },
  "hsl": {
    "h": 80.16,
    "s": 79.618,
    "l": 30.784
  },
  "oklch": {
    "l": 0.59057,
    "c": 0.14931,
    "h": 128.1
  },
  "luminance": 0.2174
}

Semantic roles & 50–950 ramp

primary

#638D10

secondary

#6637C2

accent

#32F674

background

#F9FAF5

surface

#F2F4EA

border

#CCCEC6

text

#0E1005

muted

#7E7F79

Preview Lab

Preview with #638D10

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →