#63281B#63281B

#63281B is a dark, moderate red. Relative luminance 0.042; OKLCH L 35.9% C 0.089 H 33.9°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#63281B
RGB	rgb(99, 40, 27)
HSL	hsl(11, 57%, 25%)
HSV	hsv(11, 73%, 39%)
CMYK	cmyk(0%, 59.6%, 72.7%, 61.2%)
CIE-LAB	lab(24.48, 25.73, 21.47)
CIE-LCH	lch(24.48, 33.51, 39.85°)
OKLab	oklab(35.87% 0.0738 0.0496)
OKLCH	oklch(35.87% 0.089 33.9)
XYZ	xyz(6.1028, 4.2501, 1.5357)
Luminance	0.0425 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63281B #1B5663

analogous

#631B32 #63281B #634C1B

triadic

#63281B #1B6328 #281B63

tetradic

#63281B #32631B #1B5663 #4C1B63

square

#63281B #32631B #1B5663 #4C1B63

split-complementary

#63281B #1B634C #1B3263

monochromatic

#180A07 #33150E #63281B #933B28 #C34F35

Accessibility & contrast

On white

11.35

#63281B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#63281B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63281B

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63281B	#FFFFFF	#000000	##FFFFFF
##63281B	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#38321A

Deuteranopia (green-blind)

#463F1A

Tritanopia (blue-blind)

#6D1C25

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #63281b;
/* rgb */ color: rgb(99, 40, 27);
/* oklch */ color: oklch(35.9% 0.089 33.9);

Tailwind

colors: {
  custom: {
    50: '#946457',
    500: '#63281b',
    950: '#000000',
  },
}

SCSS

$custom: #63281b;
$custom-light: #946457;
$custom-dark: #000000;

JSON

{
  "hex": "#63281b",
  "rgb": {
    "r": 99,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 10.833,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.35873,
    "c": 0.08895,
    "h": 33.9
  },
  "luminance": 0.04249
}

Semantic roles & 50–950 ramp

primary

#63281B

secondary

#418998

accent

#C5E047

background

#F9F6F5

surface

#F2EBE9

border

#CCC6C5

text

#0E0503

muted

#7E7A78

Preview Lab

Preview with #63281B

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

Preview Lab → · Contrast checker → · Palette generator →