#51100C#51100C

#51100C is a dark, moderate red. Relative luminance 0.021; OKLCH L 28.9% C 0.096 H 28.3°. Best body text is #FFFFFF at 14.69:1 contrast (WCAG AA passes).

Color values

HEX	#51100C
RGB	rgb(81, 16, 12)
HSL	hsl(3, 74%, 18%)
HSV	hsv(3, 85%, 32%)
CMYK	cmyk(0%, 80.2%, 85.2%, 68.2%)
CIE-LAB	lab(16.24, 29.65, 19.85)
CIE-LCH	lch(16.24, 35.68, 33.79°)
OKLab	oklab(28.93% 0.085 0.0457)
OKLCH	oklch(28.93% 0.096 28.3)
XYZ	xyz(3.6454, 2.1470, 0.5702)
Luminance	0.0215 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51100C #0C4D51

analogous

#510C2A #51100C #51320C

triadic

#51100C #0C5110 #100C51

tetradic

#51100C #2A510C #0C4D51 #320C51

square

#51100C #2A510C #0C4D51 #320C51

split-complementary

#51100C #0C5132 #0C2A51

monochromatic

#1B0504 #1C0504 #51100C #861B14 #BC251C

Accessibility & contrast

On white

14.69

#51100C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#51100C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51100C

14.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51100C	#FFFFFF	#000000	##FFFFFF
##51100C	1.00	14.69	1.43	14.69
#FFFFFF	14.69	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#241F0B

Deuteranopia (green-blind)

#342D09

Tritanopia (blue-blind)

#5A0010

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #51100c;
/* rgb */ color: rgb(81, 16, 12);
/* oklch */ color: oklch(28.9% 0.096 28.3);

Tailwind

colors: {
  custom: {
    50: '#88544c',
    500: '#51100c',
    950: '#000000',
  },
}

SCSS

$custom: #51100c;
$custom-light: #88544c;
$custom-dark: #000000;

JSON

{
  "hex": "#51100c",
  "rgb": {
    "r": 81,
    "g": 16,
    "b": 12
  },
  "hsl": {
    "h": 3.478,
    "s": 74.194,
    "l": 18.235
  },
  "oklch": {
    "l": 0.28934,
    "c": 0.09649,
    "h": 28.3
  },
  "luminance": 0.02146
}

Semantic roles & 50–950 ramp

primary

#51100C

secondary

#2C878C

accent

#E6F137

background

#F8F5F4

surface

#F0E9E7

border

#CBC5C3

text

#0D0301

muted

#7D7877

Preview Lab

Preview with #51100C

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

Preview Lab → · Contrast checker → · Palette generator →