#63171D#63171D

#63171D is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.108 H 21.1°. Best body text is #FFFFFF at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#63171D
RGB	rgb(99, 23, 29)
HSL	hsl(355, 62%, 24%)
HSV	hsv(355, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 70.7%, 61.2%)
CIE-LAB	lab(21.41, 34.15, 16.44)
CIE-LCH	lch(21.41, 37.91, 25.71°)
OKLab	oklab(33.58% 0.1008 0.0388)
OKLCH	oklch(33.58% 0.108 21.1)
XYZ	xyz(5.6744, 3.3550, 1.5109)
Luminance	0.0335 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63171D #17635D

analogous

#631743 #63171D #633717

triadic

#63171D #1D6317 #171D63

tetradic

#63171D #436317 #17635D #371763

square

#63171D #436317 #17635D #371763

split-complementary

#63171D #176337 #174363

monochromatic

#190607 #310B0E #63171D #95232C #C62E3A

Accessibility & contrast

On white

12.57

#63171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#63171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63171D

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63171D	#FFFFFF	#000000	##FFFFFF
##63171D	1.00	12.57	1.67	12.57
#FFFFFF	12.57	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C291D

Deuteranopia (green-blind)

#3F391B

Tritanopia (blue-blind)

#6D001A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #63171d;
/* rgb */ color: rgb(99, 23, 29);
/* oklch */ color: oklch(33.6% 0.108 21.1);

Tailwind

colors: {
  custom: {
    50: '#955b58',
    500: '#63171d',
    950: '#000000',
  },
}

SCSS

$custom: #63171d;
$custom-light: #955b58;
$custom-dark: #000000;

JSON

{
  "hex": "#63171d",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 355.263,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33577,
    "c": 0.10798,
    "h": 21.1
  },
  "luminance": 0.03354
}

Semantic roles & 50–950 ramp

primary

#63171D

secondary

#3C9A92

accent

#E5D942

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63171D

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

Preview Lab → · Contrast checker → · Palette generator →