#63171F#63171F

#63171F is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.6% C 0.108 H 19.5°. Best body text is #FFFFFF at 12.55:1 contrast (WCAG AA passes).

Color values

HEX	#63171F
RGB	rgb(99, 23, 31)
HSL	hsl(354, 62%, 24%)
HSV	hsv(354, 77%, 39%)
CMYK	cmyk(0%, 76.8%, 68.7%, 61.2%)
CIE-LAB	lab(21.45, 34.28, 15.12)
CIE-LCH	lch(21.45, 37.47, 23.80°)
OKLab	oklab(33.62% 0.1016 0.0361)
OKLCH	oklch(33.62% 0.108 19.5)
XYZ	xyz(5.6999, 3.3652, 1.6455)
Luminance	0.0336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63171F #17635B

analogous

#631745 #63171F #633517

triadic

#63171F #1F6317 #171F63

tetradic

#63171F #456317 #17635B #351763

square

#63171F #456317 #17635B #351763

split-complementary

#63171F #176335 #174563

monochromatic

#190608 #310B0F #63171F #95232F #C62E3E

Accessibility & contrast

On white

12.55

#63171F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#63171F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #63171F

12.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63171F	#FFFFFF	#000000	##FFFFFF
##63171F	1.00	12.55	1.67	12.55
#FFFFFF	12.55	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C291F

Deuteranopia (green-blind)

#3F391D

Tritanopia (blue-blind)

#6D011B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #63171f;
/* rgb */ color: rgb(99, 23, 31);
/* oklch */ color: oklch(33.6% 0.108 19.5);

Tailwind

colors: {
  custom: {
    50: '#955b5a',
    500: '#63171f',
    950: '#000000',
  },
}

SCSS

$custom: #63171f;
$custom-light: #955b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#63171f",
  "rgb": {
    "r": 99,
    "g": 23,
    "b": 31
  },
  "hsl": {
    "h": 353.684,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.33618,
    "c": 0.10786,
    "h": 19.5
  },
  "luminance": 0.03364
}

Semantic roles & 50–950 ramp

primary

#63171F

secondary

#3C9A90

accent

#E5D442

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #63171F

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

Preview Lab → · Contrast checker → · Palette generator →