#631315#631315

#631315 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.0% C 0.113 H 24.8°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#631315
RGB	rgb(99, 19, 21)
HSL	hsl(359, 68%, 23%)
HSV	hsv(359, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 78.8%, 61.2%)
CIE-LAB	lab(20.73, 35.27, 21.00)
CIE-LCH	lch(20.73, 41.05, 30.77°)
OKLab	oklab(33.02% 0.1024 0.0473)
OKLCH	oklch(33.02% 0.113 24.8)
XYZ	xyz(5.5145, 3.1734, 1.0315)
Luminance	0.0317 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631315 #136361

analogous

#63133D #631315 #633913

triadic

#631315 #156313 #131563

tetradic

#631315 #3D6313 #136361 #391363

square

#631315 #3D6313 #136361 #391363

split-complementary

#631315 #136339 #133D63

monochromatic

#1A0505 #30090A #631315 #961D20 #CA272B

Accessibility & contrast

On white

12.85

#631315 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#631315 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631315

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631315	#FFFFFF	#000000	##FFFFFF
##631315	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2714

Deuteranopia (green-blind)

#3F3812

Tritanopia (blue-blind)

#6E0015

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631315;
/* rgb */ color: rgb(99, 19, 21);
/* oklch */ color: oklch(33.0% 0.113 24.8);

Tailwind

colors: {
  custom: {
    50: '#965952',
    500: '#631315',
    950: '#000000',
  },
}

SCSS

$custom: #631315;
$custom-light: #965952;
$custom-dark: #000000;

JSON

{
  "hex": "#631315",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 21
  },
  "hsl": {
    "h": 358.5,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33024,
    "c": 0.11277,
    "h": 24.8
  },
  "luminance": 0.03173
}

Semantic roles & 50–950 ramp

primary

#631315

secondary

#379B98

accent

#EBE63D

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631315

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

Preview Lab → · Contrast checker → · Palette generator →