#B52F37#B52F37

#B52F37 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.6% C 0.170 H 22.5°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B52F37
RGB	rgb(181, 47, 55)
HSL	hsl(356, 59%, 45%)
HSV	hsv(356, 74%, 71%)
CMYK	cmyk(0%, 74%, 69.6%, 29%)
CIE-LAB	lab(41.43, 53.59, 28.06)
CIE-LCH	lch(41.43, 60.49, 27.64°)
OKLab	oklab(51.59% 0.1572 0.0651)
OKLCH	oklch(51.59% 0.17 22.5)
XYZ	xyz(20.7645, 12.1358, 4.8628)
Luminance	0.1213 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B52F37 #2FB5AD

analogous

#B52F7A #B52F37 #B56A2F

triadic

#B52F37 #37B52F #2F37B5

tetradic

#B52F37 #7AB52F #2FB5AD #6A2FB5

square

#B52F37 #7AB52F #2FB5AD #6A2FB5

split-complementary

#B52F37 #2FB56A #2F7AB5

monochromatic

#541619 #842228 #B52F37 #D15057 #DE8086

Accessibility & contrast

On white

6.13

#B52F37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B52F37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B52F37

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B52F37	#FFFFFF	#000000	##FFFFFF
##B52F37	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F36

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C70033

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b52f37;
/* rgb */ color: rgb(181, 47, 55);
/* oklch */ color: oklch(51.6% 0.170 22.5);

Tailwind

colors: {
  custom: {
    50: '#d3726e',
    500: '#b52f37',
    950: '#000000',
  },
}

SCSS

$custom: #b52f37;
$custom-light: #d3726e;
$custom-dark: #000000;

JSON

{
  "hex": "#b52f37",
  "rgb": {
    "r": 181,
    "g": 47,
    "b": 55
  },
  "hsl": {
    "h": 356.418,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51586,
    "c": 0.17012,
    "h": 22.5
  },
  "luminance": 0.12133
}

Semantic roles & 50–950 ramp

primary

#B52F37

secondary

#79C7C2

accent

#E2D946

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B52F37

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

Preview Lab → · Contrast checker → · Palette generator →