#73181B#73181B

#73181B is a dark, vivid red. Relative luminance 0.044; OKLCH L 36.8% C 0.125 H 24.3°. Best body text is #FFFFFF at 11.20:1 contrast (WCAG AA passes).

Color values

HEX	#73181B
RGB	rgb(115, 24, 27)
HSL	hsl(358, 65%, 27%)
HSV	hsv(358, 79%, 45%)
CMYK	cmyk(0%, 79.1%, 76.5%, 54.9%)
CIE-LAB	lab(24.88, 39.14, 22.74)
CIE-LCH	lch(24.88, 45.27, 30.16°)
OKLab	oklab(36.76% 0.1138 0.0515)
OKLCH	oklch(36.76% 0.125 24.3)
XYZ	xyz(7.5956, 4.3784, 1.4819)
Luminance	0.0438 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#73181B #187370

analogous

#731849 #73181B #734318

triadic

#73181B #1B7318 #181B73

tetradic

#73181B #497318 #187370 #431873

square

#73181B #497318 #187370 #431873

split-complementary

#73181B #187343 #184973

monochromatic

#190506 #400D0F #73181B #A62327 #D43137

Accessibility & contrast

On white

11.20

#73181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#73181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #73181B

11.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##73181B	#FFFFFF	#000000	##FFFFFF
##73181B	1.00	11.20	1.88	11.20
#FFFFFF	11.20	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#332F1A

Deuteranopia (green-blind)

#4A4218

Tritanopia (blue-blind)

#7F001A

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #73181b;
/* rgb */ color: rgb(115, 24, 27);
/* oklch */ color: oklch(36.8% 0.125 24.3);

Tailwind

colors: {
  custom: {
    50: '#a35d57',
    500: '#73181b',
    950: '#000000',
  },
}

SCSS

$custom: #73181b;
$custom-light: #a35d57;
$custom-dark: #000000;

JSON

{
  "hex": "#73181b",
  "rgb": {
    "r": 115,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 358.022,
    "s": 65.468,
    "l": 27.255
  },
  "oklch": {
    "l": 0.3676,
    "c": 0.12495,
    "h": 24.3
  },
  "luminance": 0.04377
}

Semantic roles & 50–950 ramp

primary

#73181B

secondary

#3FA8A5

accent

#E8E33F

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#100503

muted

#7F7978

Preview Lab

Preview with #73181B

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

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