#638D1D#638D1D

#638D1D is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 59.1% C 0.144 H 128.7°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#638D1D
RGB	rgb(99, 141, 29)
HSL	hsl(83, 66%, 33%)
HSV	hsv(83, 79%, 55%)
CMYK	cmyk(29.8%, 0%, 79.4%, 44.7%)
CIE-LAB	lab(53.80, -31.33, 50.78)
CIE-LCH	lch(53.80, 59.66, 121.67°)
OKLab	oklab(59.12% -0.0898 0.1122)
OKLCH	oklch(59.12% 0.144 128.7)
XYZ	xyz(14.8922, 21.7907, 4.5836)
Luminance	0.2179 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D1D #471D8D

analogous

#8D7F1D #638D1D #2B8D1D

triadic

#638D1D #1D638D #8D1D63

tetradic

#638D1D #1D8D7F #471D8D #8D1D2B

square

#638D1D #1D8D7F #471D8D #8D1D2B

split-complementary

#638D1D #1D2B8D #7F1D8D

monochromatic

#1C2708 #3F5A13 #638D1D #87C027 #A4DA4B

Accessibility & contrast

On white

3.92

#638D1D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#638D1D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D1D

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D1D	#FFFFFF	#000000	##000000
##638D1D	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8E8029

Tritanopia (blue-blind)

#668678

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638d1d;
/* rgb */ color: rgb(99, 141, 29);
/* oklch */ color: oklch(59.1% 0.144 128.7);

Tailwind

colors: {
  custom: {
    50: '#93ae63',
    500: '#638d1d',
    950: '#000000',
  },
}

SCSS

$custom: #638d1d;
$custom-light: #93ae63;
$custom-dark: #000000;

JSON

{
  "hex": "#638d1d",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 29
  },
  "hsl": {
    "h": 82.5,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.59119,
    "c": 0.1437,
    "h": 128.7
  },
  "luminance": 0.21791
}

Semantic roles & 50–950 ramp

primary

#638D1D

secondary

#754ABC

accent

#3FE97F

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638D1D

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

Preview Lab → · Contrast checker → · Palette generator →