#63181A#63181A

#63181A is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.107 H 23.7°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).

Color values

HEX	#63181A
RGB	rgb(99, 24, 26)
HSL	hsl(358, 61%, 24%)
HSV	hsv(358, 76%, 39%)
CMYK	cmyk(0%, 75.8%, 73.7%, 61.2%)
CIE-LAB	lab(21.51, 33.56, 18.59)
CIE-LCH	lch(21.51, 38.37, 28.99°)
OKLab	oklab(33.63% 0.0982 0.0431)
OKLCH	oklch(33.63% 0.107 23.7)
XYZ	xyz(5.6593, 3.3813, 1.3318)
Luminance	0.0338 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63181A #186361

analogous

#631840 #63181A #633C18

triadic

#63181A #1A6318 #181A63

tetradic

#63181A #406318 #186361 #3C1863

square

#63181A #406318 #186361 #3C1863

split-complementary

#63181A #18633C #184063

monochromatic

#190606 #320C0D #63181A #942427 #C63034

Accessibility & contrast

On white

12.53

#63181A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#63181A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63181A

12.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63181A	#FFFFFF	#000000	##FFFFFF
##63181A	1.00	12.53	1.68	12.53
#FFFFFF	12.53	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2919

Deuteranopia (green-blind)

#403918

Tritanopia (blue-blind)

#6D011A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #63181a;
/* rgb */ color: rgb(99, 24, 26);
/* oklch */ color: oklch(33.6% 0.107 23.7);

Tailwind

colors: {
  custom: {
    50: '#965b56',
    500: '#63181a',
    950: '#000000',
  },
}

SCSS

$custom: #63181a;
$custom-light: #965b56;
$custom-dark: #000000;

JSON

{
  "hex": "#63181a",
  "rgb": {
    "r": 99,
    "g": 24,
    "b": 26
  },
  "hsl": {
    "h": 358.4,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33633,
    "c": 0.10721,
    "h": 23.7
  },
  "luminance": 0.0338
}

Semantic roles & 50–950 ramp

primary

#63181A

secondary

#3E9997

accent

#E4E044

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63181A

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

Preview Lab → · Contrast checker → · Palette generator →