#B52B3F#B52B3F

#B52B3F is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.4% C 0.173 H 18.2°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#B52B3F
RGB	rgb(181, 43, 63)
HSL	hsl(351, 62%, 44%)
HSV	hsv(351, 76%, 71%)
CMYK	cmyk(0%, 76.2%, 65.2%, 29%)
CIE-LAB	lab(41.08, 55.38, 22.71)
CIE-LCH	lch(41.08, 59.85, 22.30°)
OKLab	oklab(51.37% 0.1646 0.0542)
OKLCH	oklch(51.37% 0.173 18.2)
XYZ	xyz(20.8194, 11.9135, 5.9050)
Luminance	0.1191 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B52B3F #2BB5A1

analogous

#B52B84 #B52B3F #B55C2B

triadic

#B52B3F #3FB52B #2B3FB5

tetradic

#B52B3F #84B52B #2BB5A1 #5C2BB5

square

#B52B3F #84B52B #2BB5A1 #5C2BB5

split-complementary

#B52B3F #2BB55C #2B84B5

monochromatic

#52141D #841F2E #B52B3F #D4495D #E07B89

Accessibility & contrast

On white

6.21

#B52B3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B52B3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B52B3F

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B52B3F	#FFFFFF	#000000	##FFFFFF
##B52B3F	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E3F

Deuteranopia (green-blind)

#756B3B

Tritanopia (blue-blind)

#C70034

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b52b3f;
/* rgb */ color: rgb(181, 43, 63);
/* oklch */ color: oklch(51.4% 0.173 18.2);

Tailwind

colors: {
  custom: {
    50: '#d37073',
    500: '#b52b3f',
    950: '#000000',
  },
}

SCSS

$custom: #b52b3f;
$custom-light: #d37073;
$custom-dark: #000000;

JSON

{
  "hex": "#b52b3f",
  "rgb": {
    "r": 181,
    "g": 43,
    "b": 63
  },
  "hsl": {
    "h": 351.304,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.51366,
    "c": 0.17327,
    "h": 18.2
  },
  "luminance": 0.1191
}

Semantic roles & 50–950 ramp

primary

#B52B3F

secondary

#74C8BC

accent

#E5CD43

background

#FEF7F7

surface

#FCEDED

border

#D5C8C8

text

#160808

muted

#847B7B

Preview Lab

Preview with #B52B3F

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

Preview Lab → · Contrast checker → · Palette generator →