#63371B#63371B

#63371B is a dark, moderate orange. Relative luminance 0.055; OKLCH L 38.6% C 0.075 H 51.3°. Best body text is #FFFFFF at 10.03:1 contrast (WCAG AA passes).

Color values

HEX	#63371B
RGB	rgb(99, 55, 27)
HSL	hsl(23, 57%, 25%)
HSV	hsv(23, 73%, 39%)
CMYK	cmyk(0%, 44.4%, 72.7%, 61.2%)
CIE-LAB	lab(28.02, 16.91, 25.54)
CIE-LCH	lch(28.02, 30.63, 56.49°)
OKLab	oklab(38.58% 0.0469 0.0584)
OKLCH	oklch(38.58% 0.075 51.3)
XYZ	xyz(6.7102, 5.4649, 1.7381)
Luminance	0.0546 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63371B #1B4763

analogous

#631B23 #63371B #635B1B

triadic

#63371B #1B6337 #371B63

tetradic

#63371B #23631B #1B4763 #5B1B63

square

#63371B #23631B #1B4763 #5B1B63

split-complementary

#63371B #1B635B #1B2363

monochromatic

#180D07 #331C0E #63371B #935228 #C36C35

Accessibility & contrast

On white

10.03

#63371B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#63371B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63371B

10.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63371B	#FFFFFF	#000000	##FFFFFF
##63371B	1.00	10.03	2.09	10.03
#FFFFFF	10.03	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443C18

Deuteranopia (green-blind)

#4E461B

Tritanopia (blue-blind)

#6D2E31

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #63371b;
/* rgb */ color: rgb(99, 55, 27);
/* oklch */ color: oklch(38.6% 0.075 51.3);

Tailwind

colors: {
  custom: {
    50: '#936e58',
    500: '#63371b',
    950: '#000000',
  },
}

SCSS

$custom: #63371b;
$custom-light: #936e58;
$custom-dark: #000000;

JSON

{
  "hex": "#63371b",
  "rgb": {
    "r": 99,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 23.333,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.38577,
    "c": 0.0749,
    "h": 51.3
  },
  "luminance": 0.05464
}

Semantic roles & 50–950 ramp

primary

#63371B

secondary

#417798

accent

#A5E047

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #63371B

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

Preview Lab → · Contrast checker → · Palette generator →