#631312#631312

#631312 is a dark, moderate red. Relative luminance 0.032; OKLCH L 33.0% C 0.113 H 26.6°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#631312
RGB	rgb(99, 19, 18)
HSL	hsl(1, 69%, 23%)
HSV	hsv(1, 82%, 39%)
CMYK	cmyk(0%, 80.8%, 81.8%, 61.2%)
CIE-LAB	lab(20.68, 35.13, 22.88)
CIE-LCH	lch(20.68, 41.93, 33.07°)
OKLab	oklab(32.98% 0.1012 0.0506)
OKLCH	oklch(32.98% 0.113 26.6)
XYZ	xyz(5.4883, 3.1629, 0.8937)
Luminance	0.0316 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#631312 #126263

analogous

#631239 #631312 #633B12

triadic

#631312 #126313 #131263

tetradic

#631312 #396312 #126263 #3B1263

square

#631312 #396312 #126263 #3B1263

split-complementary

#631312 #12633B #123963

monochromatic

#1A0505 #2F0909 #631312 #971D1B #CB2725

Accessibility & contrast

On white

12.86

#631312 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#631312 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #631312

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##631312	#FFFFFF	#000000	##FFFFFF
##631312	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)

#2B2711

Deuteranopia (green-blind)

#3F380F

Tritanopia (blue-blind)

#6E0014

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #631312;
/* rgb */ color: rgb(99, 19, 18);
/* oklch */ color: oklch(33.0% 0.113 26.6);

Tailwind

colors: {
  custom: {
    50: '#975850',
    500: '#631312',
    950: '#000000',
  },
}

SCSS

$custom: #631312;
$custom-light: #975850;
$custom-dark: #000000;

JSON

{
  "hex": "#631312",
  "rgb": {
    "r": 99,
    "g": 19,
    "b": 18
  },
  "hsl": {
    "h": 0.741,
    "s": 69.231,
    "l": 22.941
  },
  "oklch": {
    "l": 0.32981,
    "c": 0.11316,
    "h": 26.6
  },
  "luminance": 0.03162
}

Semantic roles & 50–950 ramp

primary

#631312

secondary

#369A9B

accent

#EAEC3C

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #631312

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

Preview Lab → · Contrast checker → · Palette generator →