#63231B#63231B

#63231B is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.1% C 0.095 H 29.7°. Best body text is #FFFFFF at 11.75:1 contrast (WCAG AA passes).

Color values

HEX	#63231B
RGB	rgb(99, 35, 27)
HSL	hsl(7, 57%, 25%)
HSV	hsv(7, 73%, 39%)
CMYK	cmyk(0%, 64.6%, 72.7%, 61.2%)
CIE-LAB	lab(23.45, 28.42, 20.26)
CIE-LCH	lch(23.45, 34.90, 35.49°)
OKLab	oklab(35.1% 0.0822 0.047)
OKLCH	oklch(35.1% 0.095 29.7)
XYZ	xyz(5.9450, 3.9346, 1.4831)
Luminance	0.0393 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63231B #1B5B63

analogous

#631B37 #63231B #63471B

triadic

#63231B #1B6323 #231B63

tetradic

#63231B #37631B #1B5B63 #471B63

square

#63231B #37631B #1B5B63 #471B63

split-complementary

#63231B #1B6347 #1B3763

monochromatic

#180907 #33120E #63231B #933428 #C34535

Accessibility & contrast

On white

11.75

#63231B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#63231B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63231B

11.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63231B	#FFFFFF	#000000	##FFFFFF
##63231B	1.00	11.75	1.79	11.75
#FFFFFF	11.75	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#342F1A

Deuteranopia (green-blind)

#443D19

Tritanopia (blue-blind)

#6D1521

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #63231b;
/* rgb */ color: rgb(99, 35, 27);
/* oklch */ color: oklch(35.1% 0.095 29.7);

Tailwind

colors: {
  custom: {
    50: '#956157',
    500: '#63231b',
    950: '#000000',
  },
}

SCSS

$custom: #63231b;
$custom-light: #956157;
$custom-dark: #000000;

JSON

{
  "hex": "#63231b",
  "rgb": {
    "r": 99,
    "g": 35,
    "b": 27
  },
  "hsl": {
    "h": 6.667,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35096,
    "c": 0.09466,
    "h": 29.7
  },
  "luminance": 0.03934
}

Semantic roles & 50–950 ramp

primary

#63231B

secondary

#418F98

accent

#CFE047

background

#F9F5F5

surface

#F2EAE9

border

#CCC6C5

text

#0E0503

muted

#7E7978

Preview Lab

Preview with #63231B

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

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