#64171B#64171B

#64171B is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.7% C 0.109 H 22.6°. Best body text is #FFFFFF at 12.50:1 contrast (WCAG AA passes).

Color values

HEX	#64171B
RGB	rgb(100, 23, 27)
HSL	hsl(357, 63%, 24%)
HSV	hsv(357, 77%, 39%)
CMYK	cmyk(0%, 77%, 73%, 60.8%)
CIE-LAB	lab(21.59, 34.39, 18.06)
CIE-LCH	lch(21.59, 38.84, 27.71°)
OKLab	oklab(33.73% 0.1009 0.042)
OKLCH	oklch(33.73% 0.109 22.6)
XYZ	xyz(5.7604, 3.4021, 1.3901)
Luminance	0.0340 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64171B #176460

analogous

#641742 #64171B #643A17

triadic

#64171B #1B6417 #171B64

tetradic

#64171B #426417 #176460 #3A1764

square

#64171B #426417 #176460 #3A1764

split-complementary

#64171B #17643A #174264

monochromatic

#190607 #320C0E #64171B #962228 #C82E36

Accessibility & contrast

On white

12.50

#64171B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#64171B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64171B

12.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64171B	#FFFFFF	#000000	##FFFFFF
##64171B	1.00	12.50	1.68	12.50
#FFFFFF	12.50	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D291A

Deuteranopia (green-blind)

#403A19

Tritanopia (blue-blind)

#6E0019

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64171b;
/* rgb */ color: rgb(100, 23, 27);
/* oklch */ color: oklch(33.7% 0.109 22.6);

Tailwind

colors: {
  custom: {
    50: '#965b57',
    500: '#64171b',
    950: '#000000',
  },
}

SCSS

$custom: #64171b;
$custom-light: #965b57;
$custom-dark: #000000;

JSON

{
  "hex": "#64171b",
  "rgb": {
    "r": 100,
    "g": 23,
    "b": 27
  },
  "hsl": {
    "h": 356.883,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.33734,
    "c": 0.1093,
    "h": 22.6
  },
  "luminance": 0.03401
}

Semantic roles & 50–950 ramp

primary

#64171B

secondary

#3C9A96

accent

#E6DD42

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64171B

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

Preview Lab → · Contrast checker → · Palette generator →