#631D13#631D13

#631D13 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.103 H 31.0°. Best body text is #FFFFFF at 12.24:1 contrast (WCAG AA passes).

Color values

HEX	#631D13
RGB	rgb(99, 29, 19)
HSL	hsl(8, 68%, 23%)
HSV	hsv(8, 81%, 39%)
CMYK	cmyk(0%, 70.7%, 80.8%, 61.2%)
CIE-LAB	lab(22.23, 30.97, 23.94)
CIE-LCH	lch(22.23, 39.14, 37.70°)
OKLab	oklab(34.14% 0.0884 0.0531)
OKLCH	oklch(34.14% 0.103 31)
XYZ	xyz(5.7031, 3.5792, 1.0065)
Luminance	0.0358 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631D13 #135963

analogous

#631331 #631D13 #634513

triadic

#631D13 #13631D #1D1363

tetradic

#631D13 #316313 #135963 #451363

square

#631D13 #316313 #135963 #451363

split-complementary

#631D13 #136345 #133163

monochromatic

#1A0805 #300E09 #631D13 #962C1D #CA3B27

Accessibility & contrast

On white

12.24

#631D13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#631D13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631D13

12.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631D13	#FFFFFF	#000000	##FFFFFF
##631D13	1.00	12.24	1.72	12.24
#FFFFFF	12.24	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312B11

Deuteranopia (green-blind)

#423B10

Tritanopia (blue-blind)

#6E091B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #631d13;
/* rgb */ color: rgb(99, 29, 19);
/* oklch */ color: oklch(34.1% 0.103 31.0);

Tailwind

colors: {
  custom: {
    50: '#965d51',
    500: '#631d13',
    950: '#000000',
  },
}

SCSS

$custom: #631d13;
$custom-light: #965d51;
$custom-dark: #000000;

JSON

{
  "hex": "#631d13",
  "rgb": {
    "r": 99,
    "g": 29,
    "b": 19
  },
  "hsl": {
    "h": 7.5,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34139,
    "c": 0.10313,
    "h": 31
  },
  "luminance": 0.03578
}

Semantic roles & 50–950 ramp

primary

#631D13

secondary

#378E9B

accent

#D5EB3D

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631D13

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

Preview Lab → · Contrast checker → · Palette generator →