#631313#631313

#631313 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.0% C 0.113 H 26.0°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#631313
RGB	rgb(99, 19, 19)
HSL	hsl(0, 68%, 23%)
HSV	hsv(0, 81%, 39%)
CMYK	cmyk(0%, 80.8%, 80.8%, 61.2%)
CIE-LAB	lab(20.70, 35.18, 22.27)
CIE-LCH	lch(20.70, 41.63, 32.34°)
OKLab	oklab(32.99% 0.1016 0.0495)
OKLCH	oklch(32.99% 0.113 26)
XYZ	xyz(5.4967, 3.1663, 0.9377)
Luminance	0.0316 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631313 #136363

analogous

#63133B #631313 #633B13

triadic

#631313 #136313 #131363

tetradic

#631313 #3B6313 #136363 #3B1363

square

#631313 #3B6313 #136363 #3B1363

split-complementary

#631313 #13633B #133B63

monochromatic

#1A0505 #300909 #631313 #961D1D #CA2727

Accessibility & contrast

On white

12.86

#631313 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#631313 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631313

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631313	#FFFFFF	#000000	##FFFFFF
##631313	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B2712

Deuteranopia (green-blind)

#3F3810

Tritanopia (blue-blind)

#6E0014

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631313;
/* rgb */ color: rgb(99, 19, 19);
/* oklch */ color: oklch(33.0% 0.113 26.0);

Tailwind

colors: {
  custom: {
    50: '#965851',
    500: '#631313',
    950: '#000000',
  },
}

SCSS

$custom: #631313;
$custom-light: #965851;
$custom-dark: #000000;

JSON

{
  "hex": "#631313",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 19
  },
  "hsl": {
    "h": 0,
    "s": 67.797,
    "l": 23.137
  },
  "oklch": {
    "l": 0.32994,
    "c": 0.11303,
    "h": 26
  },
  "luminance": 0.03165
}

Semantic roles & 50–950 ramp

primary

#631313

secondary

#379B9B

accent

#EBEB3D

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #631313

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

Preview Lab → · Contrast checker → · Palette generator →