#373F0B#373F0B

#373F0B is a dark, moderate yellow. Relative luminance 0.044; OKLCH L 34.9% C 0.073 H 118.0°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#373F0B
RGB	rgb(55, 63, 11)
HSL	hsl(69, 70%, 15%)
HSV	hsv(69, 83%, 25%)
CMYK	cmyk(12.7%, 0%, 82.5%, 75.3%)
CIE-LAB	lab(24.93, -11.44, 28.90)
CIE-LCH	lch(24.93, 31.08, 111.59°)
OKLab	oklab(34.89% -0.0342 0.0642)
OKLCH	oklch(34.89% 0.073 118)
XYZ	xyz(3.4135, 4.3914, 0.9843)
Luminance	0.0439 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#373F0B #130B3F

analogous

#3F2D0B #373F0B #1D3F0B

triadic

#373F0B #0B373F #3F0B37

tetradic

#373F0B #0B3F2D #130B3F #3F0B1D

square

#373F0B #0B3F2D #130B3F #3F0B1D

split-complementary

#373F0B #0B1D3F #2D0B3F

monochromatic

#171A05 #171A05 #373F0B #647314 #92A71D

Accessibility & contrast

On white

11.18

#373F0B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#373F0B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #373F0B

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##373F0B	#FFFFFF	#000000	##FFFFFF
##373F0B	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443B03

Deuteranopia (green-blind)

#433B0F

Tritanopia (blue-blind)

#3B3B35

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #373f0b;
/* rgb */ color: rgb(55, 63, 11);
/* oklch */ color: oklch(34.9% 0.073 118.0);

Tailwind

colors: {
  custom: {
    50: '#70744e',
    500: '#373f0b',
    950: '#000000',
  },
}

SCSS

$custom: #373f0b;
$custom-light: #70744e;
$custom-dark: #000000;

JSON

{
  "hex": "#373f0b",
  "rgb": {
    "r": 55,
    "g": 63,
    "b": 11
  },
  "hsl": {
    "h": 69.231,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.34889,
    "c": 0.07269,
    "h": 118
  },
  "luminance": 0.04391
}

Semantic roles & 50–950 ramp

primary

#373F0B

secondary

#372A7C

accent

#3BED56

background

#F6F7F4

surface

#ECEDE7

border

#C7C8C3

text

#080802

muted

#7B7B78

Preview Lab

Preview with #373F0B

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

Preview Lab → · Contrast checker → · Palette generator →