#37631B#37631B

#37631B is a mid, moderate yellow-green. Relative luminance 0.098; OKLCH L 45.2% C 0.113 H 135.6°. Best body text is #FFFFFF at 7.09:1 contrast (WCAG AA passes).

Color values

HEX	#37631B
RGB	rgb(55, 99, 27)
HSL	hsl(97, 57%, 25%)
HSV	hsv(97, 73%, 39%)
CMYK	cmyk(44.4%, 0%, 72.7%, 61.2%)
CIE-LAB	lab(37.51, -28.98, 34.64)
CIE-LCH	lch(37.51, 45.17, 129.92°)
OKLab	oklab(45.15% -0.0806 0.0789)
OKLCH	oklch(45.15% 0.113 135.6)
XYZ	xyz(6.2351, 9.8147, 2.6026)
Luminance	0.0982 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37631B #471B63

analogous

#5B631B #37631B #1B6323

triadic

#37631B #1B3763 #631B37

tetradic

#37631B #1B5B63 #471B63 #63231B

square

#37631B #1B5B63 #471B63 #63231B

split-complementary

#37631B #231B63 #631B5B

monochromatic

#0D1807 #1C330E #37631B #529328 #6CC335

Accessibility & contrast

On white

7.09

#37631B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.96

#37631B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37631B

7.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37631B	#FFFFFF	#000000	##FFFFFF
##37631B	1.00	7.09	2.96	7.09
#FFFFFF	7.09	1.00	21.00	1.00
#000000	2.96	21.00	1.00	21.00
##FFFFFF	7.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#675B10

Deuteranopia (green-blind)

#615721

Tritanopia (blue-blind)

#365F55

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #37631b;
/* rgb */ color: rgb(55, 99, 27);
/* oklch */ color: oklch(45.2% 0.113 135.6);

Tailwind

colors: {
  custom: {
    50: '#72905c',
    500: '#37631b',
    950: '#000000',
  },
}

SCSS

$custom: #37631b;
$custom-light: #72905c;
$custom-dark: #000000;

JSON

{
  "hex": "#37631b",
  "rgb": {
    "r": 55,
    "g": 99,
    "b": 27
  },
  "hsl": {
    "h": 96.667,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.45154,
    "c": 0.11284,
    "h": 135.6
  },
  "luminance": 0.09815
}

Semantic roles & 50–950 ramp

primary

#37631B

secondary

#774198

accent

#47E0A5

background

#F7F8F5

surface

#EDF0E9

border

#C8CBC5

text

#080C04

muted

#7B7D79

Preview Lab

Preview with #37631B

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

Preview Lab → · Contrast checker → · Palette generator →