#37581B#37581B

#37581B is a dark, moderate yellow-green. Relative luminance 0.079; OKLCH L 42.1% C 0.097 H 133.3°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#37581B
RGB	rgb(55, 88, 27)
HSL	hsl(92, 53%, 23%)
HSV	hsv(92, 69%, 35%)
CMYK	cmyk(37.5%, 0%, 69.3%, 65.5%)
CIE-LAB	lab(33.71, -23.70, 30.60)
CIE-LCH	lch(33.71, 38.70, 127.76°)
OKLab	oklab(42.05% -0.0662 0.0704)
OKLCH	oklch(42.05% 0.097 133.3)
XYZ	xyz(5.2630, 7.8706, 2.2786)
Luminance	0.0787 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37581B #3C1B58

analogous

#55581B #37581B #1B581E

triadic

#37581B #1B3758 #581B37

tetradic

#37581B #1B5558 #3C1B58 #581E1B

square

#37581B #1B5558 #3C1B58 #581E1B

split-complementary

#37581B #1E1B58 #581B55

monochromatic

#0F1707 #1A290D #37581B #548729 #72B638

Accessibility & contrast

On white

8.16

#37581B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#37581B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37581B

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37581B	#FFFFFF	#000000	##FFFFFF
##37581B	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5113

Deuteranopia (green-blind)

#574E20

Tritanopia (blue-blind)

#37544B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #37581b;
/* rgb */ color: rgb(55, 88, 27);
/* oklch */ color: oklch(42.1% 0.097 133.3);

Tailwind

colors: {
  custom: {
    50: '#71875a',
    500: '#37581b',
    950: '#000000',
  },
}

SCSS

$custom: #37581b;
$custom-light: #71875a;
$custom-dark: #000000;

JSON

{
  "hex": "#37581b",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 27
  },
  "hsl": {
    "h": 92.459,
    "s": 53.043,
    "l": 22.549
  },
  "oklch": {
    "l": 0.42053,
    "c": 0.09668,
    "h": 133.3
  },
  "luminance": 0.07871
}

Semantic roles & 50–950 ramp

primary

#37581B

secondary

#6B418E

accent

#4BDC9A

background

#F6F8F5

surface

#ECEFE9

border

#C7CAC5

text

#080B04

muted

#7B7C79

Preview Lab

Preview with #37581B

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

Preview Lab → · Contrast checker → · Palette generator →