#638B22#638B22

#638B22 is a mid, vivid yellow-green. Relative luminance 0.212; OKLCH L 58.6% C 0.138 H 128.5°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#638B22
RGB	rgb(99, 139, 34)
HSL	hsl(83, 61%, 34%)
HSV	hsv(83, 76%, 55%)
CMYK	cmyk(28.8%, 0%, 75.5%, 45.5%)
CIE-LAB	lab(53.20, -30.10, 48.48)
CIE-LCH	lch(53.20, 57.06, 121.84°)
OKLab	oklab(58.64% -0.0861 0.1082)
OKLCH	oklch(58.64% 0.138 128.5)
XYZ	xyz(14.6669, 21.2330, 4.8387)
Luminance	0.2123 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638B22 #4A228B

analogous

#8B7F22 #638B22 #2F8B22

triadic

#638B22 #22638B #8B2263

tetradic

#638B22 #228B7F #4A228B #8B222F

square

#638B22 #228B7F #4A228B #8B222F

split-complementary

#638B22 #222F8B #7F228B

monochromatic

#1D290A #405A16 #638B22 #86BC2E #A3D553

Accessibility & contrast

On white

4.00

#638B22 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.25

#638B22 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638B22

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638B22	#FFFFFF	#000000	##000000
##638B22	1.00	4.00	5.25	5.25
#FFFFFF	4.00	1.00	21.00	21.00
#000000	5.25	21.00	1.00	1.00
##000000	5.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#92810D

Deuteranopia (green-blind)

#8D7E2C

Tritanopia (blue-blind)

#668577

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #638b22;
/* rgb */ color: rgb(99, 139, 34);
/* oklch */ color: oklch(58.6% 0.138 128.5);

Tailwind

colors: {
  custom: {
    50: '#93ad65',
    500: '#638b22',
    950: '#000000',
  },
}

SCSS

$custom: #638b22;
$custom-light: #93ad65;
$custom-dark: #000000;

JSON

{
  "hex": "#638b22",
  "rgb": {
    "r": 99,
    "g": 139,
    "b": 34
  },
  "hsl": {
    "h": 82.857,
    "s": 60.694,
    "l": 33.922
  },
  "oklch": {
    "l": 0.5864,
    "c": 0.13825,
    "h": 128.5
  },
  "luminance": 0.21233
}

Semantic roles & 50–950 ramp

primary

#638B22

secondary

#7850B8

accent

#44E481

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638B22

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

Preview Lab → · Contrast checker → · Palette generator →