#B52B37#B52B37

#B52B37 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.2% C 0.174 H 21.6°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#B52B37
RGB	rgb(181, 43, 55)
HSL	hsl(355, 62%, 44%)
HSV	hsv(355, 76%, 71%)
CMYK	cmyk(0%, 76.2%, 69.6%, 29%)
CIE-LAB	lab(40.95, 54.94, 27.47)
CIE-LCH	lch(40.95, 61.43, 26.57°)
OKLab	oklab(51.23% 0.1615 0.0638)
OKLCH	oklch(51.23% 0.174 21.6)
XYZ	xyz(20.6118, 11.8305, 4.8119)
Luminance	0.1183 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B52B37 #2BB5A9

analogous

#B52B7C #B52B37 #B5642B

triadic

#B52B37 #37B52B #2B37B5

tetradic

#B52B37 #7CB52B #2BB5A9 #642BB5

square

#B52B37 #7CB52B #2BB5A9 #642BB5

split-complementary

#B52B37 #2BB564 #2B7CB5

monochromatic

#521419 #841F28 #B52B37 #D44955 #E07B84

Accessibility & contrast

On white

6.24

#B52B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#B52B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B52B37

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B52B37	#FFFFFF	#000000	##FFFFFF
##B52B37	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E36

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C70031

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b52b37;
/* rgb */ color: rgb(181, 43, 55);
/* oklch */ color: oklch(51.2% 0.174 21.6);

Tailwind

colors: {
  custom: {
    50: '#d3706d',
    500: '#b52b37',
    950: '#000000',
  },
}

SCSS

$custom: #b52b37;
$custom-light: #d3706d;
$custom-dark: #000000;

JSON

{
  "hex": "#b52b37",
  "rgb": {
    "r": 181,
    "g": 43,
    "b": 55
  },
  "hsl": {
    "h": 354.783,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51225,
    "c": 0.17363,
    "h": 21.6
  },
  "luminance": 0.11827
}

Semantic roles & 50–950 ramp

primary

#B52B37

secondary

#74C8C0

accent

#E5D743

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160807

muted

#847B7A

Preview Lab

Preview with #B52B37

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

Preview Lab → · Contrast checker → · Palette generator →