#638D20#638D20

#638D20 is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 59.1% C 0.142 H 128.9°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#638D20
RGB	rgb(99, 141, 32)
HSL	hsl(83, 63%, 34%)
HSV	hsv(83, 77%, 55%)
CMYK	cmyk(29.8%, 0%, 77.3%, 44.7%)
CIE-LAB	lab(53.82, -31.16, 49.78)
CIE-LCH	lch(53.82, 58.73, 122.05°)
OKLab	oklab(59.14% -0.0891 0.1106)
OKLCH	oklch(59.14% 0.142 128.9)
XYZ	xyz(14.9312, 21.8063, 4.7886)
Luminance	0.2181 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D20 #4A208D

analogous

#8D8120 #638D20 #2D8D20

triadic

#638D20 #20638D #8D2063

tetradic

#638D20 #208D81 #4A208D #8D202D

square

#638D20 #208D81 #4A208D #8D202D

split-complementary

#638D20 #202D8D #81208D

monochromatic

#1D2909 #405B15 #638D20 #86BF2B #A3D750

Accessibility & contrast

On white

3.92

#638D20 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#638D20 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D20

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D20	#FFFFFF	#000000	##000000
##638D20	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)

#948306

Deuteranopia (green-blind)

#8E802B

Tritanopia (blue-blind)

#668678

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638d20;
/* rgb */ color: rgb(99, 141, 32);
/* oklch */ color: oklch(59.1% 0.142 128.9);

Tailwind

colors: {
  custom: {
    50: '#93ae64',
    500: '#638d20',
    950: '#000000',
  },
}

SCSS

$custom: #638d20;
$custom-light: #93ae64;
$custom-dark: #000000;

JSON

{
  "hex": "#638d20",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 32
  },
  "hsl": {
    "h": 83.119,
    "s": 63.006,
    "l": 33.922
  },
  "oklch": {
    "l": 0.59138,
    "c": 0.14204,
    "h": 128.9
  },
  "luminance": 0.21807
}

Semantic roles & 50–950 ramp

primary

#638D20

secondary

#784EBA

accent

#42E681

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638D20

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

Preview Lab → · Contrast checker → · Palette generator →