#638B1D#638B1D

#638B1D is a mid, vivid yellow-green. Relative luminance 0.212; OKLCH L 58.6% C 0.141 H 128.2°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#638B1D
RGB	rgb(99, 139, 29)
HSL	hsl(82, 65%, 33%)
HSV	hsv(82, 79%, 55%)
CMYK	cmyk(28.8%, 0%, 79.1%, 45.5%)
CIE-LAB	lab(53.17, -30.39, 50.19)
CIE-LCH	lch(53.17, 58.67, 121.19°)
OKLab	oklab(58.61% -0.0872 0.1109)
OKLCH	oklch(58.61% 0.141 128.2)
XYZ	xyz(14.6000, 21.2062, 4.4862)
Luminance	0.2121 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638B1D #451D8B

analogous

#8B7C1D #638B1D #2C8B1D

triadic

#638B1D #1D638B #8B1D63

tetradic

#638B1D #1D8B7C #451D8B #8B1D2C

square

#638B1D #1D8B7C #451D8B #8B1D2C

split-complementary

#638B1D #1D2C8B #7C1D8B

monochromatic

#1B2608 #3F5812 #638B1D #87BE28 #A5D949

Accessibility & contrast

On white

4.01

#638B1D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.24

#638B1D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638B1D

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638B1D	#FFFFFF	#000000	##000000
##638B1D	1.00	4.01	5.24	5.24
#FFFFFF	4.01	1.00	21.00	21.00
#000000	5.24	21.00	1.00	1.00
##000000	5.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#928100

Deuteranopia (green-blind)

#8D7E28

Tritanopia (blue-blind)

#678477

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638b1d;
/* rgb */ color: rgb(99, 139, 29);
/* oklch */ color: oklch(58.6% 0.141 128.2);

Tailwind

colors: {
  custom: {
    50: '#93ad63',
    500: '#638b1d',
    950: '#000000',
  },
}

SCSS

$custom: #638b1d;
$custom-light: #93ad63;
$custom-dark: #000000;

JSON

{
  "hex": "#638b1d",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 29
  },
  "hsl": {
    "h": 81.818,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.58607,
    "c": 0.14114,
    "h": 128.2
  },
  "luminance": 0.21207
}

Semantic roles & 50–950 ramp

primary

#638B1D

secondary

#7249BB

accent

#3FE87D

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638B1D

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

Preview Lab → · Contrast checker → · Palette generator →