#731B11#731B11

#731B11 is a dark, vivid red. Relative luminance 0.045; OKLCH L 36.9% C 0.124 H 30.3°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#731B11
RGB	rgb(115, 27, 17)
HSL	hsl(6, 74%, 26%)
HSV	hsv(6, 85%, 45%)
CMYK	cmyk(0%, 76.5%, 85.2%, 54.9%)
CIE-LAB	lab(25.17, 37.62, 29.17)
CIE-LCH	lch(25.17, 47.60, 37.79°)
OKLab	oklab(36.93% 0.1068 0.0624)
OKLCH	oklch(36.93% 0.124 30.3)
XYZ	xyz(7.5642, 4.4704, 0.9948)
Luminance	0.0447 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731B11 #116973

analogous

#731138 #731B11 #734C11

triadic

#731B11 #11731B #1B1173

tetradic

#731B11 #387311 #116973 #4C1173

square

#731B11 #387311 #116973 #4C1173

split-complementary

#731B11 #11734C #113873

monochromatic

#1B0604 #3E0E09 #731B11 #A82819 #DE3421

Accessibility & contrast

On white

11.09

#731B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#731B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731B11

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731B11	#FFFFFF	#000000	##FFFFFF
##731B11	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)

#362F0F

Deuteranopia (green-blind)

#4B430D

Tritanopia (blue-blind)

#7F001A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #731b11;
/* rgb */ color: rgb(115, 27, 17);
/* oklch */ color: oklch(36.9% 0.124 30.3);

Tailwind

colors: {
  custom: {
    50: '#a35f50',
    500: '#731b11',
    950: '#000000',
  },
}

SCSS

$custom: #731b11;
$custom-light: #a35f50;
$custom-dark: #000000;

JSON

{
  "hex": "#731b11",
  "rgb": {
    "r": 115,
    "g": 27,
    "b": 17
  },
  "hsl": {
    "h": 6.122,
    "s": 74.242,
    "l": 25.882
  },
  "oklch": {
    "l": 0.36934,
    "c": 0.12369,
    "h": 30.3
  },
  "luminance": 0.04469
}

Semantic roles & 50–950 ramp

primary

#731B11

secondary

#369EAA

accent

#DEF137

background

#FAF5F4

surface

#F4E9E7

border

#CEC5C3

text

#110502

muted

#807978

Preview Lab

Preview with #731B11

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

Preview Lab → · Contrast checker → · Palette generator →