#6B181A#6B181A

#6B181A is a dark, moderate red. Relative luminance 0.039; OKLCH L 35.2% C 0.116 H 24.3°. Best body text is #FFFFFF at 11.86:1 contrast (WCAG AA passes).

Color values

HEX	#6B181A
RGB	rgb(107, 24, 26)
HSL	hsl(359, 63%, 26%)
HSV	hsv(359, 78%, 42%)
CMYK	cmyk(0%, 77.6%, 75.7%, 58%)
CIE-LAB	lab(23.19, 36.37, 20.99)
CIE-LCH	lch(23.19, 42.00, 29.99°)
OKLab	oklab(35.19% 0.106 0.0479)
OKLCH	oklch(35.19% 0.116 24.3)
XYZ	xyz(6.5772, 3.8547, 1.3748)
Luminance	0.0385 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#6B181A #186B69

analogous

#6B1843 #6B181A #6B3F18

triadic

#6B181A #1A6B18 #181A6B

tetradic

#6B181A #436B18 #186B69 #3F186B

square

#6B181A #436B18 #186B69 #3F186B

split-complementary

#6B181A #186B3F #18436B

monochromatic

#190606 #390D0E #6B181A #9D2326 #CF2E32

Accessibility & contrast

On white

11.86

#6B181A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#6B181A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #6B181A

11.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##6B181A	#FFFFFF	#000000	##FFFFFF
##6B181A	1.00	11.86	1.77	11.86
#FFFFFF	11.86	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C19

Deuteranopia (green-blind)

#453E17

Tritanopia (blue-blind)

#76001A

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #6b181a;
/* rgb */ color: rgb(107, 24, 26);
/* oklch */ color: oklch(35.2% 0.116 24.3);

Tailwind

colors: {
  custom: {
    50: '#9c5c56',
    500: '#6b181a',
    950: '#000000',
  },
}

SCSS

$custom: #6b181a;
$custom-light: #9c5c56;
$custom-dark: #000000;

JSON

{
  "hex": "#6b181a",
  "rgb": {
    "r": 107,
    "g": 24,
    "b": 26
  },
  "hsl": {
    "h": 358.554,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.35186,
    "c": 0.1163,
    "h": 24.3
  },
  "luminance": 0.03854
}

Semantic roles & 50–950 ramp

primary

#6B181A

secondary

#3EA19E

accent

#E6E241

background

#FAF5F5

surface

#F4E9E9

border

#CEC5C5

text

#0F0403

muted

#7F7978

Preview Lab

Preview with #6B181A

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

Preview Lab → · Contrast checker → · Palette generator →