#731B2B#731B2B

#731B2B is a dark, vivid red. Relative luminance 0.046; OKLCH L 37.4% C 0.121 H 15.2°. Best body text is #FFFFFF at 10.93:1 contrast (WCAG AA passes).

Color values

HEX	#731B2B
RGB	rgb(115, 27, 43)
HSL	hsl(349, 62%, 28%)
HSV	hsv(349, 77%, 45%)
CMYK	cmyk(0%, 76.5%, 62.6%, 54.9%)
CIE-LAB	lab(25.58, 38.99, 12.95)
CIE-LCH	lch(25.58, 41.08, 18.37°)
OKLab	oklab(37.37% 0.117 0.0318)
OKLCH	oklch(37.37% 0.121 15.2)
XYZ	xyz(7.8990, 4.6043, 2.7578)
Luminance	0.0460 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731B2B #1B7363

analogous

#731B57 #731B2B #73371B

triadic

#731B2B #2B731B #1B2B73

tetradic

#731B2B #57731B #1B7363 #371B73

square

#731B2B #57731B #1B7363 #371B73

split-complementary

#731B2B #1B7337 #1B5773

monochromatic

#190609 #410F18 #731B2B #A5273E #D03854

Accessibility & contrast

On white

10.93

#731B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#731B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731B2B

10.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731B2B	#FFFFFF	#000000	##FFFFFF
##731B2B	1.00	10.93	1.92	10.93
#FFFFFF	10.93	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33312B

Deuteranopia (green-blind)

#494329

Tritanopia (blue-blind)

#7E0122

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #731b2b;
/* rgb */ color: rgb(115, 27, 43);
/* oklch */ color: oklch(37.4% 0.121 15.2);

Tailwind

colors: {
  custom: {
    50: '#a15f64',
    500: '#731b2b',
    950: '#000000',
  },
}

SCSS

$custom: #731b2b;
$custom-light: #a15f64;
$custom-dark: #000000;

JSON

{
  "hex": "#731b2b",
  "rgb": {
    "r": 115,
    "g": 27,
    "b": 43
  },
  "hsl": {
    "h": 349.091,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37367,
    "c": 0.12121,
    "h": 15.2
  },
  "luminance": 0.04603
}

Semantic roles & 50–950 ramp

primary

#731B2B

secondary

#42A895

accent

#E5C843

background

#FAF5F5

surface

#F4EAEA

border

#CEC6C6

text

#100505

muted

#7F7979

Preview Lab

Preview with #731B2B

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

Preview Lab → · Contrast checker → · Palette generator →