#B52F3B#B52F3B

#B52F3B is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.7% C 0.170 H 20.9°. Best body text is #FFFFFF at 6.11:1 contrast (WCAG AA passes).

Color values

HEX	#B52F3B
RGB	rgb(181, 47, 59)
HSL	hsl(355, 59%, 45%)
HSV	hsv(355, 74%, 71%)
CMYK	cmyk(0%, 74%, 67.4%, 29%)
CIE-LAB	lab(41.49, 53.80, 25.70)
CIE-LCH	lch(41.49, 59.62, 25.53°)
OKLab	oklab(51.65% 0.1587 0.0605)
OKLCH	oklch(51.65% 0.17 20.9)
XYZ	xyz(20.8643, 12.1757, 5.3883)
Luminance	0.1217 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B52F3B #2FB5A9

analogous

#B52F7E #B52F3B #B5662F

triadic

#B52F3B #3BB52F #2F3BB5

tetradic

#B52F3B #7EB52F #2FB5A9 #662FB5

square

#B52F3B #7EB52F #2FB5A9 #662FB5

split-complementary

#B52F3B #2FB566 #2F7EB5

monochromatic

#54161B #84222B #B52F3B #D1505B #DE8089

Accessibility & contrast

On white

6.11

#B52F3B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B52F3B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B52F3B

6.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B52F3B	#FFFFFF	#000000	##FFFFFF
##B52F3B	1.00	6.11	3.43	6.11
#FFFFFF	6.11	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55503A

Deuteranopia (green-blind)

#776C37

Tritanopia (blue-blind)

#C70035

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b52f3b;
/* rgb */ color: rgb(181, 47, 59);
/* oklch */ color: oklch(51.7% 0.170 20.9);

Tailwind

colors: {
  custom: {
    50: '#d37271',
    500: '#b52f3b',
    950: '#000000',
  },
}

SCSS

$custom: #b52f3b;
$custom-light: #d37271;
$custom-dark: #000000;

JSON

{
  "hex": "#b52f3b",
  "rgb": {
    "r": 181,
    "g": 47,
    "b": 59
  },
  "hsl": {
    "h": 354.627,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51653,
    "c": 0.16982,
    "h": 20.9
  },
  "luminance": 0.12173
}

Semantic roles & 50–950 ramp

primary

#B52F3B

secondary

#79C7C0

accent

#E2D446

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B52F3B

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

Preview Lab → · Contrast checker → · Palette generator →