#631318#631318

#631318 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.1% C 0.112 H 22.9°. Best body text is #FFFFFF at 12.83:1 contrast (WCAG AA passes).

Color values

HEX	#631318
RGB	rgb(99, 19, 24)
HSL	hsl(356, 68%, 23%)
HSV	hsv(356, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 75.8%, 61.2%)
CIE-LAB	lab(20.77, 35.41, 19.05)
CIE-LCH	lch(20.77, 40.21, 28.28°)
OKLab	oklab(33.07% 0.1036 0.0437)
OKLCH	oklch(33.07% 0.112 22.9)
XYZ	xyz(5.5440, 3.1852, 1.1869)
Luminance	0.0318 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631318 #13635E

analogous

#631340 #631318 #633613

triadic

#631318 #186313 #131863

tetradic

#631318 #406313 #13635E #361363

square

#631318 #406313 #13635E #361363

split-complementary

#631318 #136336 #134063

monochromatic

#1A0506 #30090C #631318 #961D24 #CA2731

Accessibility & contrast

On white

12.83

#631318 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#631318 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631318

12.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631318	#FFFFFF	#000000	##FFFFFF
##631318	1.00	12.83	1.64	12.83
#FFFFFF	12.83	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2717

Deuteranopia (green-blind)

#3F3815

Tritanopia (blue-blind)

#6E0016

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631318;
/* rgb */ color: rgb(99, 19, 24);
/* oklch */ color: oklch(33.1% 0.112 22.9);

Tailwind

colors: {
  custom: {
    50: '#965954',
    500: '#631318',
    950: '#000000',
  },
}

SCSS

$custom: #631318;
$custom-light: #965954;
$custom-dark: #000000;

JSON

{
  "hex": "#631318",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 24
  },
  "hsl": {
    "h": 356.25,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.33072,
    "c": 0.11243,
    "h": 22.9
  },
  "luminance": 0.03184
}

Semantic roles & 50–950 ramp

primary

#631318

secondary

#379B94

accent

#EBE03D

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #631318

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

Preview Lab → · Contrast checker → · Palette generator →