#63131A#63131A

#63131A is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.1% C 0.112 H 21.5°. Best body text is #FFFFFF at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#63131A
RGB	rgb(99, 19, 26)
HSL	hsl(355, 68%, 23%)
HSV	hsv(355, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 73.7%, 61.2%)
CIE-LAB	lab(20.80, 35.52, 17.74)
CIE-LCH	lch(20.80, 39.70, 26.54°)
OKLab	oklab(33.11% 0.1044 0.0412)
OKLCH	oklch(33.11% 0.112 21.5)
XYZ	xyz(5.5655, 3.1938, 1.3005)
Luminance	0.0319 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63131A #13635C

analogous

#631342 #63131A #633413

triadic

#63131A #1A6313 #131A63

tetradic

#63131A #426313 #13635C #341363

square

#63131A #426313 #13635C #341363

split-complementary

#63131A #136334 #134263

monochromatic

#1A0507 #30090D #63131A #961D27 #CA2735

Accessibility & contrast

On white

12.82

#63131A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#63131A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63131A

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63131A	#FFFFFF	#000000	##FFFFFF
##63131A	1.00	12.82	1.64	12.82
#FFFFFF	12.82	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B271A

Deuteranopia (green-blind)

#3F3817

Tritanopia (blue-blind)

#6D0016

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #63131a;
/* rgb */ color: rgb(99, 19, 26);
/* oklch */ color: oklch(33.1% 0.112 21.5);

Tailwind

colors: {
  custom: {
    50: '#965956',
    500: '#63131a',
    950: '#000000',
  },
}

SCSS

$custom: #63131a;
$custom-light: #965956;
$custom-dark: #000000;

JSON

{
  "hex": "#63131a",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 26
  },
  "hsl": {
    "h": 354.75,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33107,
    "c": 0.11224,
    "h": 21.5
  },
  "luminance": 0.03193
}

Semantic roles & 50–950 ramp

primary

#63131A

secondary

#379B92

accent

#EBDB3D

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #63131A

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

Preview Lab → · Contrast checker → · Palette generator →