#731B10#731B10

#731B10 is a dark, vivid red. Relative luminance 0.045; OKLCH L 36.9% C 0.124 H 30.7°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#731B10
RGB	rgb(115, 27, 16)
HSL	hsl(7, 76%, 26%)
HSV	hsv(7, 86%, 45%)
CMYK	cmyk(0%, 76.5%, 86.1%, 54.9%)
CIE-LAB	lab(25.16, 37.58, 29.73)
CIE-LCH	lch(25.16, 47.92, 38.34°)
OKLab	oklab(36.92% 0.1065 0.0633)
OKLCH	oklch(36.92% 0.124 30.7)
XYZ	xyz(7.5566, 4.4673, 0.9545)
Luminance	0.0447 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731B10 #106873

analogous

#731036 #731B10 #734C10

triadic

#731B10 #10731B #1B1073

tetradic

#731B10 #367310 #106873 #4C1073

square

#731B10 #367310 #106873 #4C1073

split-complementary

#731B10 #10734C #103673

monochromatic

#1B0604 #3D0E09 #731B10 #A92817 #DE341F

Accessibility & contrast

On white

11.09

#731B10 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#731B10 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731B10

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731B10	#FFFFFF	#000000	##FFFFFF
##731B10	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#362F0E

Deuteranopia (green-blind)

#4B430B

Tritanopia (blue-blind)

#7F0019

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #731b10;
/* rgb */ color: rgb(115, 27, 16);
/* oklch */ color: oklch(36.9% 0.124 30.7);

Tailwind

colors: {
  custom: {
    50: '#a35f4f',
    500: '#731b10',
    950: '#000000',
  },
}

SCSS

$custom: #731b10;
$custom-light: #a35f4f;
$custom-dark: #000000;

JSON

{
  "hex": "#731b10",
  "rgb": {
    "r": 115,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 6.667,
    "s": 75.573,
    "l": 25.686
  },
  "oklch": {
    "l": 0.36924,
    "c": 0.12386,
    "h": 30.7
  },
  "luminance": 0.04466
}

Semantic roles & 50–950 ramp

primary

#731B10

secondary

#349DAA

accent

#DDF236

background

#FAF5F4

surface

#F4E9E7

border

#CEC5C3

text

#110502

muted

#807978

Preview Lab

Preview with #731B10

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

Preview Lab → · Contrast checker → · Palette generator →