#63131D#63131D

#63131D is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.2% C 0.112 H 19.4°. Best body text is #FFFFFF at 12.79:1 contrast (WCAG AA passes).

Color values

HEX	#63131D
RGB	rgb(99, 19, 29)
HSL	hsl(353, 68%, 23%)
HSV	hsv(353, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 70.7%, 61.2%)
CIE-LAB	lab(20.86, 35.70, 15.75)
CIE-LCH	lch(20.86, 39.02, 23.81°)
OKLab	oklab(33.17% 0.1057 0.0372)
OKLCH	oklch(33.17% 0.112 19.4)
XYZ	xyz(5.6008, 3.2079, 1.4864)
Luminance	0.0321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63131D #136359

analogous

#631345 #63131D #633113

triadic

#63131D #1D6313 #131D63

tetradic

#63131D #456313 #136359 #311363

square

#63131D #456313 #136359 #311363

split-complementary

#63131D #136331 #134563

monochromatic

#1A0508 #30090E #63131D #961D2C #CA273B

Accessibility & contrast

On white

12.79

#63131D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#63131D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63131D

12.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63131D	#FFFFFF	#000000	##FFFFFF
##63131D	1.00	12.79	1.64	12.79
#FFFFFF	12.79	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A271D

Deuteranopia (green-blind)

#3E381B

Tritanopia (blue-blind)

#6D0017

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #63131d;
/* rgb */ color: rgb(99, 19, 29);
/* oklch */ color: oklch(33.2% 0.112 19.4);

Tailwind

colors: {
  custom: {
    50: '#965958',
    500: '#63131d',
    950: '#000000',
  },
}

SCSS

$custom: #63131d;
$custom-light: #965958;
$custom-dark: #000000;

JSON

{
  "hex": "#63131d",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 29
  },
  "hsl": {
    "h": 352.5,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33165,
    "c": 0.11207,
    "h": 19.4
  },
  "luminance": 0.03207
}

Semantic roles & 50–950 ramp

primary

#63131D

secondary

#379B8E

accent

#EBD53D

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63131D

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

Preview Lab → · Contrast checker → · Palette generator →