#37310B#37310B

#37310B is a dark, muted yellow. Relative luminance 0.030; OKLCH L 31.1% C 0.055 H 100.2°. Best body text is #FFFFFF at 13.07:1 contrast (WCAG AA passes).

Color values

HEX	#37310B
RGB	rgb(55, 49, 11)
HSL	hsl(52, 67%, 13%)
HSV	hsv(52, 80%, 22%)
CMYK	cmyk(0%, 10.9%, 80%, 78.4%)
CIE-LAB	lab(20.18, -2.72, 23.94)
CIE-LCH	lch(20.18, 24.10, 96.49°)
OKLab	oklab(31.09% -0.0097 0.0542)
OKLCH	oklch(31.09% 0.055 100.2)
XYZ	xyz(2.7344, 3.0331, 0.7580)
Luminance	0.0303 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#37310B #0B1137

analogous

#371B0B #37310B #27370B

triadic

#37310B #0B3731 #310B37

tetradic

#37310B #0B371B #0B1137 #370B27

square

#37310B #0B371B #0B1137 #370B27

split-complementary

#37310B #0B2737 #1B0B37

monochromatic

#1A1705 #1A1705 #37310B #6A5E15 #9D8C1F

Accessibility & contrast

On white

13.07

#37310B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#37310B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #37310B

13.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##37310B	#FFFFFF	#000000	##FFFFFF
##37310B	1.00	13.07	1.61	13.07
#FFFFFF	13.07	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#362F06

Deuteranopia (green-blind)

#38320D

Tritanopia (blue-blind)

#3C2D29

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #37310b;
/* rgb */ color: rgb(55, 49, 11);
/* oklch */ color: oklch(31.1% 0.055 100.2);

Tailwind

colors: {
  custom: {
    50: '#70684c',
    500: '#37310b',
    950: '#000000',
  },
}

SCSS

$custom: #37310b;
$custom-light: #70684c;
$custom-dark: #000000;

JSON

{
  "hex": "#37310b",
  "rgb": {
    "r": 55,
    "g": 49,
    "b": 11
  },
  "hsl": {
    "h": 51.818,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.31094,
    "c": 0.05509,
    "h": 100.2
  },
  "luminance": 0.03033
}

Semantic roles & 50–950 ramp

primary

#37310B

secondary

#2A3474

accent

#56EA3E

background

#F6F6F4

surface

#ECEBE7

border

#C7C6C3

text

#080601

muted

#7B7A77

Preview Lab

Preview with #37310B

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

Preview Lab → · Contrast checker → · Palette generator →