#638C1D#638C1D

#638C1D is a mid, vivid yellow-green. Relative luminance 0.215; OKLCH L 58.9% C 0.142 H 128.4°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#638C1D
RGB	rgb(99, 140, 29)
HSL	hsl(82, 66%, 33%)
HSV	hsv(82, 79%, 55%)
CMYK	cmyk(29.3%, 0%, 79.3%, 45.1%)
CIE-LAB	lab(53.49, -30.86, 50.48)
CIE-LCH	lch(53.49, 59.17, 121.44°)
OKLab	oklab(58.86% -0.0885 0.1116)
OKLCH	oklch(58.86% 0.142 128.4)
XYZ	xyz(14.7454, 21.4971, 4.5346)
Luminance	0.2150 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638C1D #461D8C

analogous

#8C7D1D #638C1D #2C8C1D

triadic

#638C1D #1D638C #8C1D63

tetradic

#638C1D #1D8C7D #461D8C #8C1D2C

square

#638C1D #1D8C7D #461D8C #8C1D2C

split-complementary

#638C1D #1D2C8C #7D1D8C

monochromatic

#1B2708 #3F5912 #638C1D #87BF28 #A4D94A

Accessibility & contrast

On white

3.96

#638C1D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#638C1D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638C1D

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638C1D	#FFFFFF	#000000	##000000
##638C1D	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938200

Deuteranopia (green-blind)

#8E7F28

Tritanopia (blue-blind)

#678577

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #638c1d;
/* rgb */ color: rgb(99, 140, 29);
/* oklch */ color: oklch(58.9% 0.142 128.4);

Tailwind

colors: {
  custom: {
    50: '#93ae63',
    500: '#638c1d',
    950: '#000000',
  },
}

SCSS

$custom: #638c1d;
$custom-light: #93ae63;
$custom-dark: #000000;

JSON

{
  "hex": "#638c1d",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 29
  },
  "hsl": {
    "h": 82.162,
    "s": 65.68,
    "l": 33.137
  },
  "oklch": {
    "l": 0.58863,
    "c": 0.14242,
    "h": 128.4
  },
  "luminance": 0.21498
}

Semantic roles & 50–950 ramp

primary

#638C1D

secondary

#7349BC

accent

#3FE97E

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638C1D

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

Preview Lab → · Contrast checker → · Palette generator →