#31370B#31370B

#31370B is a dark, moderate yellow. Relative luminance 0.034; OKLCH L 32.1% C 0.064 H 116.9°. Best body text is #FFFFFF at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#31370B
RGB	rgb(49, 55, 11)
HSL	hsl(68, 67%, 13%)
HSV	hsv(68, 80%, 22%)
CMYK	cmyk(10.9%, 0%, 80%, 78.4%)
CIE-LAB	lab(21.61, -9.70, 25.35)
CIE-LCH	lch(21.61, 27.15, 110.93°)
OKLab	oklab(32.09% -0.0289 0.0571)
OKLCH	oklch(32.09% 0.064 116.9)
XYZ	xyz(2.6933, 3.4095, 0.8328)
Luminance	0.0341 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31370B #110B37

analogous

#37270B #31370B #1B370B

triadic

#31370B #0B3137 #370B31

tetradic

#31370B #0B3727 #110B37 #370B1B

square

#31370B #0B3727 #110B37 #370B1B

split-complementary

#31370B #0B1B37 #270B37

monochromatic

#171A05 #171A05 #31370B #5E6A15 #8C9D1F

Accessibility & contrast

On white

12.49

#31370B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#31370B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31370B

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31370B	#FFFFFF	#000000	##FFFFFF
##31370B	1.00	12.49	1.68	12.49
#FFFFFF	12.49	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B3405

Deuteranopia (green-blind)

#3B340E

Tritanopia (blue-blind)

#35332E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #31370b;
/* rgb */ color: rgb(49, 55, 11);
/* oklch */ color: oklch(32.1% 0.064 116.9);

Tailwind

colors: {
  custom: {
    50: '#6b6d4d',
    500: '#31370b',
    950: '#000000',
  },
}

SCSS

$custom: #31370b;
$custom-light: #6b6d4d;
$custom-dark: #000000;

JSON

{
  "hex": "#31370b",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 11
  },
  "hsl": {
    "h": 68.182,
    "s": 66.667,
    "l": 12.941
  },
  "oklch": {
    "l": 0.32094,
    "c": 0.06401,
    "h": 116.9
  },
  "luminance": 0.0341
}

Semantic roles & 50–950 ramp

primary

#31370B

secondary

#342A74

accent

#3EEA56

background

#F6F6F4

surface

#EBEBE7

border

#C6C6C3

text

#070701

muted

#7A7A77

Preview Lab

Preview with #31370B

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

Preview Lab → · Contrast checker → · Palette generator →