#631321#631321

#631321 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.3% C 0.112 H 16.4°. Best body text is #FFFFFF at 12.76:1 contrast (WCAG AA passes).

Color values

HEX	#631321
RGB	rgb(99, 19, 33)
HSL	hsl(350, 68%, 23%)
HSV	hsv(350, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 66.7%, 61.2%)
CIE-LAB	lab(20.94, 35.96, 13.08)
CIE-LCH	lch(20.94, 38.27, 19.99°)
OKLab	oklab(33.25% 0.1075 0.0316)
OKLCH	oklch(33.25% 0.112 16.4)
XYZ	xyz(5.6536, 3.2290, 1.7641)
Luminance	0.0323 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631321 #136355

analogous

#631349 #631321 #632D13

triadic

#631321 #216313 #132163

tetradic

#631321 #496313 #136355 #2D1363

square

#631321 #496313 #136355 #2D1363

split-complementary

#631321 #13632D #134963

monochromatic

#1A0509 #300910 #631321 #961D32 #CA2743

Accessibility & contrast

On white

12.76

#631321 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#631321 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631321

12.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631321	#FFFFFF	#000000	##FFFFFF
##631321	1.00	12.76	1.65	12.76
#FFFFFF	12.76	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2821

Deuteranopia (green-blind)

#3E381F

Tritanopia (blue-blind)

#6D0019

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631321;
/* rgb */ color: rgb(99, 19, 33);
/* oklch */ color: oklch(33.3% 0.112 16.4);

Tailwind

colors: {
  custom: {
    50: '#95595c',
    500: '#631321',
    950: '#000000',
  },
}

SCSS

$custom: #631321;
$custom-light: #95595c;
$custom-dark: #000000;

JSON

{
  "hex": "#631321",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 33
  },
  "hsl": {
    "h": 349.5,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33251,
    "c": 0.11201,
    "h": 16.4
  },
  "luminance": 0.03228
}

Semantic roles & 50–950 ramp

primary

#631321

secondary

#379B89

accent

#EBCC3D

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #631321

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

Preview Lab → · Contrast checker → · Palette generator →