#B53937#B53937

#B53937 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.161 H 25.3°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#B53937
RGB	rgb(181, 57, 55)
HSL	hsl(1, 53%, 46%)
HSV	hsv(1, 70%, 71%)
CMYK	cmyk(0%, 68.5%, 69.6%, 29%)
CIE-LAB	lab(42.81, 49.80, 29.72)
CIE-LCH	lch(42.81, 57.99, 30.82°)
OKLab	oklab(52.61% 0.1452 0.0688)
OKLCH	oklch(52.61% 0.161 25.3)
XYZ	xyz(21.2110, 13.0289, 5.0116)
Luminance	0.1303 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53937 #37B3B5

analogous

#B53774 #B53937 #B57837

triadic

#B53937 #37B539 #3937B5

tetradic

#B53937 #74B537 #37B3B5 #7837B5

square

#B53937 #74B537 #37B3B5 #7837B5

split-complementary

#B53937 #37B578 #3774B5

monochromatic

#571B1A #862A29 #B53937 #CD5E5C #DC8C8B

Accessibility & contrast

On white

5.82

#B53937 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B53937 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53937

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53937	#FFFFFF	#000000	##FFFFFF
##B53937	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5436

Deuteranopia (green-blind)

#7A6F33

Tritanopia (blue-blind)

#C7153A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53937;
/* rgb */ color: rgb(181, 57, 55);
/* oklch */ color: oklch(52.6% 0.161 25.3);

Tailwind

colors: {
  custom: {
    50: '#d3776e',
    500: '#b53937',
    950: '#000000',
  },
}

SCSS

$custom: #b53937;
$custom-light: #d3776e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53937",
  "rgb": {
    "r": 181,
    "g": 57,
    "b": 55
  },
  "hsl": {
    "h": 0.952,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52613,
    "c": 0.16064,
    "h": 25.3
  },
  "luminance": 0.13026
}

Semantic roles & 50–950 ramp

primary

#B53937

secondary

#82C5C6

accent

#DADD4B

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53937

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

Preview Lab → · Contrast checker → · Palette generator →