#43181B#43181B

#43181B is a dark, moderate red. Relative luminance 0.019; OKLCH L 27.6% C 0.067 H 18.3°. Best body text is #FFFFFF at 15.16:1 contrast (WCAG AA passes).

Color values

HEX	#43181B
RGB	rgb(67, 24, 27)
HSL	hsl(356, 47%, 18%)
HSV	hsv(356, 64%, 26%)
CMYK	cmyk(0%, 64.2%, 59.7%, 73.7%)
CIE-LAB	lab(15.09, 21.12, 8.39)
CIE-LCH	lch(15.09, 22.72, 21.66°)
OKLab	oklab(27.62% 0.0633 0.021)
OKLCH	oklch(27.62% 0.067 18.3)
XYZ	xyz(2.8394, 1.9260, 1.2589)
Luminance	0.0193 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#43181B #184340

analogous

#431830 #43181B #432A18

triadic

#43181B #1B4318 #181B43

tetradic

#43181B #304318 #184340 #2A1843

square

#43181B #304318 #184340 #2A1843

split-complementary

#43181B #18432A #183043

monochromatic

#170809 #170809 #43181B #70282D #9D383F

Accessibility & contrast

On white

15.16

#43181B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#43181B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #43181B

15.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##43181B	#FFFFFF	#000000	##FFFFFF
##43181B	1.00	15.16	1.39	15.16
#FFFFFF	15.16	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22201B

Deuteranopia (green-blind)

#2D291A

Tritanopia (blue-blind)

#4A1119

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #43181b;
/* rgb */ color: rgb(67, 24, 27);
/* oklch */ color: oklch(27.6% 0.067 18.3);

Tailwind

colors: {
  custom: {
    50: '#7a5757',
    500: '#43181b',
    950: '#000000',
  },
}

SCSS

$custom: #43181b;
$custom-light: #7a5757;
$custom-dark: #000000;

JSON

{
  "hex": "#43181b",
  "rgb": {
    "r": 67,
    "g": 24,
    "b": 27
  },
  "hsl": {
    "h": 355.814,
    "s": 47.253,
    "l": 17.843
  },
  "oklch": {
    "l": 0.2762,
    "c": 0.06668,
    "h": 18.3
  },
  "luminance": 0.01926
}

Semantic roles & 50–950 ramp

primary

#43181B

secondary

#3D7A75

accent

#D7CE51

background

#F7F5F5

surface

#EEE9E9

border

#C9C5C5

text

#0A0303

muted

#7C7878

Preview Lab

Preview with #43181B

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

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