#64171C#64171C

#64171C is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.8% C 0.109 H 21.9°. Best body text is #FFFFFF at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#64171C
RGB	rgb(100, 23, 28)
HSL	hsl(356, 63%, 24%)
HSV	hsv(356, 77%, 39%)
CMYK	cmyk(0%, 77%, 72%, 60.8%)
CIE-LAB	lab(21.60, 34.45, 17.41)
CIE-LCH	lch(21.60, 38.59, 26.81°)
OKLab	oklab(33.75% 0.1013 0.0408)
OKLCH	oklch(33.75% 0.109 21.9)
XYZ	xyz(5.7722, 3.4068, 1.4520)
Luminance	0.0341 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64171C #17645F

analogous

#641743 #64171C #643917

triadic

#64171C #1C6417 #171C64

tetradic

#64171C #436417 #17645F #391764

square

#64171C #436417 #17645F #391764

split-complementary

#64171C #176439 #174364

monochromatic

#190607 #320C0E #64171C #96222A #C82E38

Accessibility & contrast

On white

12.49

#64171C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#64171C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64171C

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64171C	#FFFFFF	#000000	##FFFFFF
##64171C	1.00	12.49	1.68	12.49
#FFFFFF	12.49	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D291C

Deuteranopia (green-blind)

#403A1A

Tritanopia (blue-blind)

#6E001A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64171c;
/* rgb */ color: rgb(100, 23, 28);
/* oklch */ color: oklch(33.8% 0.109 21.9);

Tailwind

colors: {
  custom: {
    50: '#965b58',
    500: '#64171c',
    950: '#000000',
  },
}

SCSS

$custom: #64171c;
$custom-light: #965b58;
$custom-dark: #000000;

JSON

{
  "hex": "#64171c",
  "rgb": {
    "r": 100,
    "g": 23,
    "b": 28
  },
  "hsl": {
    "h": 356.104,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33753,
    "c": 0.1092,
    "h": 21.9
  },
  "luminance": 0.03406
}

Semantic roles & 50–950 ramp

primary

#64171C

secondary

#3C9A94

accent

#E6DB42

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #64171C

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

Preview Lab → · Contrast checker → · Palette generator →