#51180B#51180B

#51180B is a dark, moderate red. Relative luminance 0.024; OKLCH L 29.9% C 0.088 H 34.2°. Best body text is #FFFFFF at 14.14:1 contrast (WCAG AA passes).

Color values

HEX	#51180B
RGB	rgb(81, 24, 11)
HSL	hsl(11, 76%, 18%)
HSV	hsv(11, 86%, 32%)
CMYK	cmyk(0%, 70.4%, 86.4%, 68.2%)
CIE-LAB	lab(17.59, 25.91, 21.94)
CIE-LCH	lch(17.59, 33.95, 40.26°)
OKLab	oklab(29.94% 0.0731 0.0498)
OKLCH	oklch(29.94% 0.088 34.2)
XYZ	xyz(3.7808, 2.4273, 0.5860)
Luminance	0.0243 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51180B #0B4451

analogous

#510B21 #51180B #513B0B

triadic

#51180B #0B5118 #180B51

tetradic

#51180B #21510B #0B4451 #3B0B51

square

#51180B #21510B #0B4451 #3B0B51

split-complementary

#51180B #0B513B #0B2151

monochromatic

#1B0804 #1B0804 #51180B #872812 #BD381A

Accessibility & contrast

On white

14.14

#51180B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#51180B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51180B

14.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51180B	#FFFFFF	#000000	##FFFFFF
##51180B	1.00	14.14	1.49	14.14
#FFFFFF	14.14	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#282309

Deuteranopia (green-blind)

#363009

Tritanopia (blue-blind)

#5A0815

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #51180b;
/* rgb */ color: rgb(81, 24, 11);
/* oklch */ color: oklch(29.9% 0.088 34.2);

Tailwind

colors: {
  custom: {
    50: '#88584b',
    500: '#51180b',
    950: '#000000',
  },
}

SCSS

$custom: #51180b;
$custom-light: #88584b;
$custom-dark: #000000;

JSON

{
  "hex": "#51180b",
  "rgb": {
    "r": 81,
    "g": 24,
    "b": 11
  },
  "hsl": {
    "h": 11.143,
    "s": 76.087,
    "l": 18.039
  },
  "oklch": {
    "l": 0.29939,
    "c": 0.08841,
    "h": 34.2
  },
  "luminance": 0.02427
}

Semantic roles & 50–950 ramp

primary

#51180B

secondary

#2B7B8D

accent

#CFF335

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0C0301

muted

#7D7877

Preview Lab

Preview with #51180B

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

Preview Lab → · Contrast checker → · Palette generator →