#731B18#731B18

#731B18 is a dark, vivid red. Relative luminance 0.045; OKLCH L 37.0% C 0.123 H 27.1°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#731B18
RGB	rgb(115, 27, 24)
HSL	hsl(2, 65%, 27%)
HSV	hsv(2, 79%, 45%)
CMYK	cmyk(0%, 76.5%, 79.1%, 54.9%)
CIE-LAB	lab(25.25, 37.88, 25.05)
CIE-LCH	lch(25.25, 45.42, 33.48°)
OKLab	oklab(37.02% 0.1092 0.0558)
OKLCH	oklch(37.02% 0.123 27.1)
XYZ	xyz(7.6279, 4.4958, 1.3301)
Luminance	0.0449 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731B18 #187073

analogous

#731843 #731B18 #734918

triadic

#731B18 #18731B #1B1873

tetradic

#731B18 #437318 #187073 #491873

square

#731B18 #437318 #187073 #491873

split-complementary

#731B18 #187349 #184373

monochromatic

#190605 #400F0D #731B18 #A62723 #D43731

Accessibility & contrast

On white

11.06

#731B18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#731B18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731B18

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731B18	#FFFFFF	#000000	##FFFFFF
##731B18	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353017

Deuteranopia (green-blind)

#4B4315

Tritanopia (blue-blind)

#7F001B

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #731b18;
/* rgb */ color: rgb(115, 27, 24);
/* oklch */ color: oklch(37.0% 0.123 27.1);

Tailwind

colors: {
  custom: {
    50: '#a35f55',
    500: '#731b18',
    950: '#000000',
  },
}

SCSS

$custom: #731b18;
$custom-light: #a35f55;
$custom-dark: #000000;

JSON

{
  "hex": "#731b18",
  "rgb": {
    "r": 115,
    "g": 27,
    "b": 24
  },
  "hsl": {
    "h": 1.978,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.37017,
    "c": 0.12258,
    "h": 27.1
  },
  "luminance": 0.04495
}

Semantic roles & 50–950 ramp

primary

#731B18

secondary

#3FA5A8

accent

#E3E83F

background

#FAF5F4

surface

#F4EAE8

border

#CEC6C4

text

#100503

muted

#7F7978

Preview Lab

Preview with #731B18

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

Preview Lab → · Contrast checker → · Palette generator →