#B13637#B13637

#B13637 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.6% C 0.159 H 24.2°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#B13637
RGB	rgb(177, 54, 55)
HSL	hsl(360, 53%, 45%)
HSV	hsv(360, 69%, 69%)
CMYK	cmyk(0%, 69.5%, 68.9%, 30.6%)
CIE-LAB	lab(41.63, 49.68, 28.13)
CIE-LCH	lch(41.63, 57.09, 29.52°)
OKLab	oklab(51.6% 0.1453 0.0654)
OKLCH	oklch(51.6% 0.159 24.2)
XYZ	xyz(20.1424, 12.2642, 4.9203)
Luminance	0.1226 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13637 #36B1B0

analogous

#B13675 #B13637 #B17236

triadic

#B13637 #37B136 #3637B1

tetradic

#B13637 #75B136 #36B1B0 #7236B1

square

#B13637 #75B136 #36B1B0 #7236B1

split-complementary

#B13637 #36B172 #3675B1

monochromatic

#53191A #822828 #B13637 #CC5859 #DA8788

Accessibility & contrast

On white

6.08

#B13637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B13637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13637

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13637	#FFFFFF	#000000	##FFFFFF
##B13637	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585136

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C21138

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b13637;
/* rgb */ color: rgb(177, 54, 55);
/* oklch */ color: oklch(51.6% 0.159 24.2);

Tailwind

colors: {
  custom: {
    50: '#d0756e',
    500: '#b13637',
    950: '#000000',
  },
}

SCSS

$custom: #b13637;
$custom-light: #d0756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b13637",
  "rgb": {
    "r": 177,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.512,
    "s": 53.247,
    "l": 45.294
  },
  "oklch": {
    "l": 0.516,
    "c": 0.15934,
    "h": 24.2
  },
  "luminance": 0.12261
}

Semantic roles & 50–950 ramp

primary

#B13637

secondary

#7FC4C4

accent

#DDDB4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B13637

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

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