#64181D#64181D

#64181D is a dark, moderate red. Relative luminance 0.035; OKLCH L 33.9% C 0.108 H 21.6°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#64181D
RGB	rgb(100, 24, 29)
HSL	hsl(356, 61%, 24%)
HSV	hsv(356, 76%, 39%)
CMYK	cmyk(0%, 76%, 71%, 60.8%)
CIE-LAB	lab(21.77, 34.10, 16.94)
CIE-LCH	lch(21.77, 38.07, 26.41°)
OKLab	oklab(33.88% 0.1004 0.0399)
OKLCH	oklch(33.88% 0.108 21.6)
XYZ	xyz(5.8046, 3.4522, 1.5228)
Luminance	0.0345 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64181D #18645F

analogous

#641843 #64181D #643918

triadic

#64181D #1D6418 #181D64

tetradic

#64181D #436418 #18645F #391864

square

#64181D #436418 #18645F #391864

split-complementary

#64181D #186439 #184364

monochromatic

#190607 #330C0F #64181D #95242B #C7303A

Accessibility & contrast

On white

12.42

#64181D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#64181D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64181D

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64181D	#FFFFFF	#000000	##FFFFFF
##64181D	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2A1D

Deuteranopia (green-blind)

#403A1B

Tritanopia (blue-blind)

#6E011B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64181d;
/* rgb */ color: rgb(100, 24, 29);
/* oklch */ color: oklch(33.9% 0.108 21.6);

Tailwind

colors: {
  custom: {
    50: '#965b58',
    500: '#64181d',
    950: '#000000',
  },
}

SCSS

$custom: #64181d;
$custom-light: #965b58;
$custom-dark: #000000;

JSON

{
  "hex": "#64181d",
  "rgb": {
    "r": 100,
    "g": 24,
    "b": 29
  },
  "hsl": {
    "h": 356.053,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.33882,
    "c": 0.10806,
    "h": 21.6
  },
  "luminance": 0.03451
}

Semantic roles & 50–950 ramp

primary

#64181D

secondary

#3E9A94

accent

#E4DA43

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #64181D

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

Preview Lab → · Contrast checker → · Palette generator →