#64181F#64181F

#64181F is a dark, moderate red. Relative luminance 0.035; OKLCH L 33.9% C 0.108 H 20.2°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#64181F
RGB	rgb(100, 24, 31)
HSL	hsl(354, 61%, 24%)
HSV	hsv(354, 76%, 39%)
CMYK	cmyk(0%, 76%, 69%, 60.8%)
CIE-LAB	lab(21.81, 34.22, 15.62)
CIE-LCH	lch(21.81, 37.62, 24.53°)
OKLab	oklab(33.92% 0.1013 0.0372)
OKLCH	oklch(33.92% 0.108 20.2)
XYZ	xyz(5.8301, 3.4624, 1.6574)
Luminance	0.0346 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64181F #18645D

analogous

#641845 #64181F #643718

triadic

#64181F #1F6418 #181F64

tetradic

#64181F #456418 #18645D #371864

square

#64181F #456418 #18645D #371864

split-complementary

#64181F #186437 #184564

monochromatic

#190608 #330C10 #64181F #95242E #C7303E

Accessibility & contrast

On white

12.41

#64181F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#64181F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64181F

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64181F	#FFFFFF	#000000	##FFFFFF
##64181F	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2A1F

Deuteranopia (green-blind)

#403A1D

Tritanopia (blue-blind)

#6E021B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64181f;
/* rgb */ color: rgb(100, 24, 31);
/* oklch */ color: oklch(33.9% 0.108 20.2);

Tailwind

colors: {
  custom: {
    50: '#965b5a',
    500: '#64181f',
    950: '#000000',
  },
}

SCSS

$custom: #64181f;
$custom-light: #965b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#64181f",
  "rgb": {
    "r": 100,
    "g": 24,
    "b": 31
  },
  "hsl": {
    "h": 354.474,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.33922,
    "c": 0.10791,
    "h": 20.2
  },
  "luminance": 0.03462
}

Semantic roles & 50–950 ramp

primary

#64181F

secondary

#3E9A92

accent

#E4D643

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #64181F

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

Preview Lab → · Contrast checker → · Palette generator →