#638E2B#638E2B

#638E2B is a mid, vivid yellow-green. Relative luminance 0.222; OKLCH L 59.5% C 0.136 H 130.0°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#638E2B
RGB	rgb(99, 142, 43)
HSL	hsl(86, 54%, 36%)
HSV	hsv(86, 70%, 56%)
CMYK	cmyk(30.3%, 0%, 69.7%, 44.3%)
CIE-LAB	lab(54.21, -30.91, 45.97)
CIE-LCH	lch(54.21, 55.39, 123.92°)
OKLab	oklab(59.48% -0.0875 0.1043)
OKLCH	oklch(59.48% 0.136 130)
XYZ	xyz(15.2545, 22.1726, 5.7611)
Luminance	0.2217 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638E2B #562B8E

analogous

#8E882B #638E2B #318E2B

triadic

#638E2B #2B638E #8E2B63

tetradic

#638E2B #2B8E88 #562B8E #8E2B31

square

#638E2B #2B8E88 #562B8E #8E2B31

split-complementary

#638E2B #2B318E #882B8E

monochromatic

#22300F #425F1D #638E2B #84BD39 #A1D063

Accessibility & contrast

On white

3.86

#638E2B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#638E2B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638E2B

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638E2B	#FFFFFF	#000000	##000000
##638E2B	1.00	3.86	5.43	5.43
#FFFFFF	3.86	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#95841C

Deuteranopia (green-blind)

#8F8133

Tritanopia (blue-blind)

#66887A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #638e2b;
/* rgb */ color: rgb(99, 142, 43);
/* oklch */ color: oklch(59.5% 0.136 130.0);

Tailwind

colors: {
  custom: {
    50: '#93af6a',
    500: '#638e2b',
    950: '#000000',
  },
}

SCSS

$custom: #638e2b;
$custom-light: #93af6a;
$custom-dark: #000000;

JSON

{
  "hex": "#638e2b",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 43
  },
  "hsl": {
    "h": 86.061,
    "s": 53.514,
    "l": 36.275
  },
  "oklch": {
    "l": 0.59478,
    "c": 0.13616,
    "h": 130
  },
  "luminance": 0.22173
}

Semantic roles & 50–950 ramp

primary

#638E2B

secondary

#855FB6

accent

#4BDD8A

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1007

muted

#7E7F7A

Preview Lab

Preview with #638E2B

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

Preview Lab → · Contrast checker → · Palette generator →