#63131C#63131C

#63131C is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.1% C 0.112 H 20.1°. Best body text is #FFFFFF at 12.80:1 contrast (WCAG AA passes).

Color values

HEX	#63131C
RGB	rgb(99, 19, 28)
HSL	hsl(353, 68%, 23%)
HSV	hsv(353, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 71.7%, 61.2%)
CIE-LAB	lab(20.84, 35.64, 16.41)
CIE-LCH	lch(20.84, 39.24, 24.73°)
OKLab	oklab(33.15% 0.1053 0.0386)
OKLCH	oklch(33.15% 0.112 20.1)
XYZ	xyz(5.5887, 3.2031, 1.4224)
Luminance	0.0320 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63131C #13635A

analogous

#631344 #63131C #633213

triadic

#63131C #1C6313 #131C63

tetradic

#63131C #446313 #13635A #321363

square

#63131C #446313 #13635A #321363

split-complementary

#63131C #136332 #134463

monochromatic

#1A0507 #30090D #63131C #961D2B #CA2739

Accessibility & contrast

On white

12.80

#63131C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#63131C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63131C

12.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63131C	#FFFFFF	#000000	##FFFFFF
##63131C	1.00	12.80	1.64	12.80
#FFFFFF	12.80	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A271C

Deuteranopia (green-blind)

#3E381A

Tritanopia (blue-blind)

#6D0017

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #63131c;
/* rgb */ color: rgb(99, 19, 28);
/* oklch */ color: oklch(33.1% 0.112 20.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#63131c",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 28
  },
  "hsl": {
    "h": 353.25,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33145,
    "c": 0.11212,
    "h": 20.1
  },
  "luminance": 0.03202
}

Semantic roles & 50–950 ramp

primary

#63131C

secondary

#379B8F

accent

#EBD73D

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63131C

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

Preview Lab → · Contrast checker → · Palette generator →