#63171C#63171C

#63171C is a dark, moderate red. Relative luminance 0.033; OKLCH L 33.6% C 0.108 H 21.8°. Best body text is #FFFFFF at 12.58:1 contrast (WCAG AA passes).

Color values

HEX	#63171C
RGB	rgb(99, 23, 28)
HSL	hsl(356, 62%, 24%)
HSV	hsv(356, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 71.7%, 61.2%)
CIE-LAB	lab(21.39, 34.09, 17.10)
CIE-LCH	lch(21.39, 38.14, 26.64°)
OKLab	oklab(33.56% 0.1003 0.0401)
OKLCH	oklch(33.56% 0.108 21.8)
XYZ	xyz(5.6622, 3.3501, 1.4469)
Luminance	0.0335 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63171C #17635E

analogous

#631742 #63171C #633817

triadic

#63171C #1C6317 #171C63

tetradic

#63171C #426317 #17635E #381763

square

#63171C #426317 #17635E #381763

split-complementary

#63171C #176338 #174263

monochromatic

#190607 #310B0E #63171C #95232A #C62E38

Accessibility & contrast

On white

12.58

#63171C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#63171C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63171C

12.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63171C	#FFFFFF	#000000	##FFFFFF
##63171C	1.00	12.58	1.67	12.58
#FFFFFF	12.58	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C291C

Deuteranopia (green-blind)

#40391A

Tritanopia (blue-blind)

#6D001A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #63171c;
/* rgb */ color: rgb(99, 23, 28);
/* oklch */ color: oklch(33.6% 0.108 21.8);

Tailwind

colors: {
  custom: {
    50: '#955a58',
    500: '#63171c',
    950: '#000000',
  },
}

SCSS

$custom: #63171c;
$custom-light: #955a58;
$custom-dark: #000000;

JSON

{
  "hex": "#63171c",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 28
  },
  "hsl": {
    "h": 356.053,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33558,
    "c": 0.10807,
    "h": 21.8
  },
  "luminance": 0.03349
}

Semantic roles & 50–950 ramp

primary

#63171C

secondary

#3C9A93

accent

#E5DB42

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63171C

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

Preview Lab → · Contrast checker → · Palette generator →