#64181A#64181A

#64181A is a dark, moderate red. Relative luminance 0.034; OKLCH L 33.8% C 0.108 H 23.8°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#64181A
RGB	rgb(100, 24, 26)
HSL	hsl(358, 61%, 24%)
HSV	hsv(358, 76%, 39%)
CMYK	cmyk(0%, 76%, 74%, 60.8%)
CIE-LAB	lab(21.72, 33.92, 18.89)
CIE-LCH	lch(21.72, 38.83, 29.12°)
OKLab	oklab(33.83% 0.0992 0.0437)
OKLCH	oklch(33.83% 0.108 23.8)
XYZ	xyz(5.7692, 3.4380, 1.3369)
Luminance	0.0344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#64181A #186462

analogous

#641840 #64181A #643C18

triadic

#64181A #1A6418 #181A64

tetradic

#64181A #406418 #186462 #3C1864

square

#64181A #406418 #186462 #3C1864

split-complementary

#64181A #18643C #184064

monochromatic

#190606 #330C0D #64181A #952427 #C73034

Accessibility & contrast

On white

12.45

#64181A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#64181A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #64181A

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##64181A	#FFFFFF	#000000	##FFFFFF
##64181A	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2A19

Deuteranopia (green-blind)

#413A18

Tritanopia (blue-blind)

#6F001A

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #64181a;
/* rgb */ color: rgb(100, 24, 26);
/* oklch */ color: oklch(33.8% 0.108 23.8);

Tailwind

colors: {
  custom: {
    50: '#965b56',
    500: '#64181a',
    950: '#000000',
  },
}

SCSS

$custom: #64181a;
$custom-light: #965b56;
$custom-dark: #000000;

JSON

{
  "hex": "#64181a",
  "rgb": {
    "r": 100,
    "g": 24,
    "b": 26
  },
  "hsl": {
    "h": 358.421,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.33827,
    "c": 0.10837,
    "h": 23.8
  },
  "luminance": 0.03437
}

Semantic roles & 50–950 ramp

primary

#64181A

secondary

#3E9A98

accent

#E4E043

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #64181A

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

Preview Lab → · Contrast checker → · Palette generator →