#63151C#63151C

#63151C is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.3% C 0.110 H 20.9°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#63151C
RGB	rgb(99, 21, 28)
HSL	hsl(355, 65%, 24%)
HSV	hsv(355, 79%, 39%)
CMYK	cmyk(0%, 78.8%, 71.7%, 61.2%)
CIE-LAB	lab(21.11, 34.89, 16.75)
CIE-LCH	lch(21.11, 38.70, 25.64°)
OKLab	oklab(33.35% 0.1029 0.0393)
OKLCH	oklch(33.35% 0.11 20.9)
XYZ	xyz(5.6240, 3.2737, 1.4341)
Luminance	0.0327 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63151C #15635C

analogous

#631543 #63151C #633515

triadic

#63151C #1C6315 #151C63

tetradic

#63151C #436315 #15635C #351563

square

#63151C #436315 #15635C #351563

split-complementary

#63151C #156335 #154363

monochromatic

#190507 #310A0E #63151C #95202A #C82A39

Accessibility & contrast

On white

12.69

#63151C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#63151C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63151C

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63151C	#FFFFFF	#000000	##FFFFFF
##63151C	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B281C

Deuteranopia (green-blind)

#3F391A

Tritanopia (blue-blind)

#6D0018

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #63151c;
/* rgb */ color: rgb(99, 21, 28);
/* oklch */ color: oklch(33.3% 0.110 20.9);

Tailwind

colors: {
  custom: {
    50: '#965a58',
    500: '#63151c',
    950: '#000000',
  },
}

SCSS

$custom: #63151c;
$custom-light: #965a58;
$custom-dark: #000000;

JSON

{
  "hex": "#63151c",
  "rgb": {
    "r": 99,
    "g": 21,
    "b": 28
  },
  "hsl": {
    "h": 354.615,
    "s": 65,
    "l": 23.529
  },
  "oklch": {
    "l": 0.33345,
    "c": 0.11013,
    "h": 20.9
  },
  "luminance": 0.03273
}

Semantic roles & 50–950 ramp

primary

#63151C

secondary

#3A9A91

accent

#E8D940

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63151C

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

Preview Lab → · Contrast checker → · Palette generator →