#B13337#B13337

#B13337 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.162 H 23.3°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#B13337
RGB	rgb(177, 51, 55)
HSL	hsl(358, 55%, 45%)
HSV	hsv(358, 71%, 69%)
CMYK	cmyk(0%, 71.2%, 68.9%, 30.6%)
CIE-LAB	lab(41.21, 50.85, 27.61)
CIE-LCH	lch(41.21, 57.87, 28.50°)
OKLab	oklab(51.28% 0.149 0.0643)
OKLCH	oklch(51.28% 0.162 23.3)
XYZ	xyz(20.0070, 11.9936, 4.8752)
Luminance	0.1199 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13337 #33B1AD

analogous

#B13376 #B13337 #B16E33

triadic

#B13337 #37B133 #3337B1

tetradic

#B13337 #76B133 #33B1AD #6E33B1

square

#B13337 #76B133 #33B1AD #6E33B1

split-complementary

#B13337 #33B16E #3376B1

monochromatic

#521819 #812528 #B13337 #CE5457 #DB8386

Accessibility & contrast

On white

6.18

#B13337 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B13337 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13337

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13337	#FFFFFF	#000000	##FFFFFF
##B13337	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565036

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C30736

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b13337;
/* rgb */ color: rgb(177, 51, 55);
/* oklch */ color: oklch(51.3% 0.162 23.3);

Tailwind

colors: {
  custom: {
    50: '#d0736e',
    500: '#b13337',
    950: '#000000',
  },
}

SCSS

$custom: #b13337;
$custom-light: #d0736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b13337",
  "rgb": {
    "r": 177,
    "g": 51,
    "b": 55
  },
  "hsl": {
    "h": 358.095,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51281,
    "c": 0.16228,
    "h": 23.3
  },
  "luminance": 0.11991
}

Semantic roles & 50–950 ramp

primary

#B13337

secondary

#7BC5C2

accent

#DFDA49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B13337

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

Preview Lab → · Contrast checker → · Palette generator →