#638C22#638C22

#638C22 is a mid, vivid yellow-green. Relative luminance 0.215; OKLCH L 58.9% C 0.140 H 128.8°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#638C22
RGB	rgb(99, 140, 34)
HSL	hsl(83, 61%, 34%)
HSV	hsv(83, 76%, 55%)
CMYK	cmyk(29.3%, 0%, 75.7%, 45.1%)
CIE-LAB	lab(53.52, -30.58, 48.78)
CIE-LCH	lch(53.52, 57.57, 122.08°)
OKLab	oklab(58.9% -0.0874 0.1088)
OKLCH	oklch(58.9% 0.14 128.8)
XYZ	xyz(14.8124, 21.5239, 4.8872)
Luminance	0.2152 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638C22 #4B228C

analogous

#8C8022 #638C22 #2E8C22

triadic

#638C22 #22638C #8C2263

tetradic

#638C22 #228C80 #4B228C #8C222E

square

#638C22 #228C80 #4B228C #8C222E

split-complementary

#638C22 #222E8C #80228C

monochromatic

#1D2A0A #405B16 #638C22 #86BD2E #A3D553

Accessibility & contrast

On white

3.96

#638C22 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#638C22 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638C22

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638C22	#FFFFFF	#000000	##000000
##638C22	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)

#93820C

Deuteranopia (green-blind)

#8D7F2C

Tritanopia (blue-blind)

#668678

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #638c22;
/* rgb */ color: rgb(99, 140, 34);
/* oklch */ color: oklch(58.9% 0.140 128.8);

Tailwind

colors: {
  custom: {
    50: '#93ae65',
    500: '#638c22',
    950: '#000000',
  },
}

SCSS

$custom: #638c22;
$custom-light: #93ae65;
$custom-dark: #000000;

JSON

{
  "hex": "#638c22",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 34
  },
  "hsl": {
    "h": 83.208,
    "s": 60.92,
    "l": 34.118
  },
  "oklch": {
    "l": 0.58896,
    "c": 0.13955,
    "h": 128.8
  },
  "luminance": 0.21524
}

Semantic roles & 50–950 ramp

primary

#638C22

secondary

#7951B9

accent

#44E482

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638C22

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

Preview Lab → · Contrast checker → · Palette generator →