#6C181B#6C181B

#6C181B is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.4% C 0.117 H 23.8°. Best body text is #FFFFFF at 11.77:1 contrast (WCAG AA passes).

Color values

HEX	#6C181B
RGB	rgb(108, 24, 27)
HSL	hsl(358, 64%, 26%)
HSV	hsv(358, 78%, 42%)
CMYK	cmyk(0%, 77.8%, 75%, 57.6%)
CIE-LAB	lab(23.41, 36.77, 20.65)
CIE-LCH	lch(23.41, 42.17, 29.32°)
OKLab	oklab(35.4% 0.1073 0.0473)
OKLCH	oklch(35.4% 0.117 23.8)
XYZ	xyz(6.7096, 3.9216, 1.4403)
Luminance	0.0392 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6C181B #186C69

analogous

#6C1845 #6C181B #6C3F18

triadic

#6C181B #1B6C18 #181B6C

tetradic

#6C181B #456C18 #186C69 #3F186C

square

#6C181B #456C18 #186C69 #3F186C

split-complementary

#6C181B #186C3F #18456C

monochromatic

#190606 #3A0D0E #6C181B #9E2328 #D02E34

Accessibility & contrast

On white

11.77

#6C181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#6C181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #6C181B

11.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6C181B	#FFFFFF	#000000	##FFFFFF
##6C181B	1.00	11.77	1.78	11.77
#FFFFFF	11.77	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312C1A

Deuteranopia (green-blind)

#463E18

Tritanopia (blue-blind)

#77001A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #6c181b;
/* rgb */ color: rgb(108, 24, 27);
/* oklch */ color: oklch(35.4% 0.117 23.8);

Tailwind

colors: {
  custom: {
    50: '#9d5c57',
    500: '#6c181b',
    950: '#000000',
  },
}

SCSS

$custom: #6c181b;
$custom-light: #9d5c57;
$custom-dark: #000000;

JSON

{
  "hex": "#6c181b",
  "rgb": {
    "r": 108,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 357.857,
    "s": 63.636,
    "l": 25.882
  },
  "oklch": {
    "l": 0.35397,
    "c": 0.1173,
    "h": 23.8
  },
  "luminance": 0.03921
}

Semantic roles & 50–950 ramp

primary

#6C181B

secondary

#3EA29E

accent

#E7E141

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#100403

muted

#7F7978

Preview Lab

Preview with #6C181B

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

Preview Lab → · Contrast checker → · Palette generator →