#6B181E#6B181E

#6B181E is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.3% C 0.116 H 21.8°. Best body text is #FFFFFF at 11.83:1 contrast (WCAG AA passes).

Color values

HEX	#6B181E
RGB	rgb(107, 24, 30)
HSL	hsl(356, 63%, 26%)
HSV	hsv(356, 78%, 42%)
CMYK	cmyk(0%, 77.6%, 72%, 58%)
CIE-LAB	lab(23.25, 36.59, 18.41)
CIE-LCH	lch(23.25, 40.96, 26.71°)
OKLab	oklab(35.25% 0.1076 0.043)
OKLCH	oklch(35.25% 0.116 21.8)
XYZ	xyz(6.6251, 3.8738, 1.6269)
Luminance	0.0387 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6B181E #186B65

analogous

#6B1847 #6B181E #6B3B18

triadic

#6B181E #1E6B18 #181E6B

tetradic

#6B181E #476B18 #186B65 #3B186B

square

#6B181E #476B18 #186B65 #3B186B

split-complementary

#6B181E #186B3B #18476B

monochromatic

#190607 #390D10 #6B181E #9D232C #CF2E3A

Accessibility & contrast

On white

11.83

#6B181E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#6B181E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #6B181E

11.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6B181E	#FFFFFF	#000000	##FFFFFF
##6B181E	1.00	11.83	1.77	11.83
#FFFFFF	11.83	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1E

Deuteranopia (green-blind)

#453E1B

Tritanopia (blue-blind)

#76001B

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #6b181e;
/* rgb */ color: rgb(107, 24, 30);
/* oklch */ color: oklch(35.3% 0.116 21.8);

Tailwind

colors: {
  custom: {
    50: '#9c5c59',
    500: '#6b181e',
    950: '#000000',
  },
}

SCSS

$custom: #6b181e;
$custom-light: #9c5c59;
$custom-dark: #000000;

JSON

{
  "hex": "#6b181e",
  "rgb": {
    "r": 107,
    "g": 24,
    "b": 30
  },
  "hsl": {
    "h": 355.663,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35255,
    "c": 0.11588,
    "h": 21.8
  },
  "luminance": 0.03873
}

Semantic roles & 50–950 ramp

primary

#6B181E

secondary

#3EA19A

accent

#E6DA41

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #6B181E

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

Preview Lab → · Contrast checker → · Palette generator →