#731E1B#731E1B

#731E1B is a dark, moderate red. Relative luminance 0.047; OKLCH L 37.4% C 0.119 H 26.7°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#731E1B
RGB	rgb(115, 30, 27)
HSL	hsl(2, 62%, 28%)
HSV	hsv(2, 77%, 45%)
CMYK	cmyk(0%, 73.9%, 76.5%, 54.9%)
CIE-LAB	lab(25.72, 36.81, 23.70)
CIE-LCH	lch(25.72, 43.78, 32.77°)
OKLab	oklab(37.39% 0.1065 0.0536)
OKLCH	oklch(37.39% 0.119 26.7)
XYZ	xyz(7.7332, 4.6537, 1.5278)
Luminance	0.0465 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731E1B #1B7073

analogous

#731B44 #731E1B #734A1B

triadic

#731E1B #1B731E #1E1B73

tetradic

#731E1B #44731B #1B7073 #4A1B73

square

#731E1B #44731B #1B7073 #4A1B73

split-complementary

#731E1B #1B734A #1B4473

monochromatic

#190606 #41110F #731E1B #A52B27 #D03D38

Accessibility & contrast

On white

10.88

#731E1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#731E1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731E1B

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731E1B	#FFFFFF	#000000	##FFFFFF
##731E1B	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#36311A

Deuteranopia (green-blind)

#4C4418

Tritanopia (blue-blind)

#7F011E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #731e1b;
/* rgb */ color: rgb(115, 30, 27);
/* oklch */ color: oklch(37.4% 0.119 26.7);

Tailwind

colors: {
  custom: {
    50: '#a26057',
    500: '#731e1b',
    950: '#000000',
  },
}

SCSS

$custom: #731e1b;
$custom-light: #a26057;
$custom-dark: #000000;

JSON

{
  "hex": "#731e1b",
  "rgb": {
    "r": 115,
    "g": 30,
    "b": 27
  },
  "hsl": {
    "h": 2.045,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37386,
    "c": 0.11922,
    "h": 26.7
  },
  "luminance": 0.04653
}

Semantic roles & 50–950 ramp

primary

#731E1B

secondary

#42A4A8

accent

#E0E543

background

#FAF5F5

surface

#F4EAE9

border

#CEC6C5

text

#100503

muted

#7F7978

Preview Lab

Preview with #731E1B

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

Preview Lab → · Contrast checker → · Palette generator →