#B5372A#B5372A

#B5372A is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.165 H 29.6°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#B5372A
RGB	rgb(181, 55, 42)
HSL	hsl(6, 62%, 44%)
HSV	hsv(6, 77%, 71%)
CMYK	cmyk(0%, 69.6%, 76.8%, 29%)
CIE-LAB	lab(42.35, 50.01, 36.71)
CIE-LCH	lch(42.35, 62.04, 36.28°)
OKLab	oklab(52.22% 0.1431 0.0812)
OKLCH	oklch(52.22% 0.165 29.6)
XYZ	xyz(20.8425, 12.7264, 3.5490)
Luminance	0.1272 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5372A #2AA8B5

analogous

#B52A62 #B5372A #B57C2A

triadic

#B5372A #2AB537 #372AB5

tetradic

#B5372A #62B52A #2AA8B5 #7C2AB5

square

#B5372A #62B52A #2AA8B5 #7C2AB5

split-complementary

#B5372A #2AB57C #2A62B5

monochromatic

#521913 #83281E #B5372A #D45548 #E08379

Accessibility & contrast

On white

5.92

#B5372A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B5372A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5372A

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5372A	#FFFFFF	#000000	##FFFFFF
##B5372A	1.00	5.92	3.54	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5227

Deuteranopia (green-blind)

#7B6E25

Tritanopia (blue-blind)

#C70935

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b5372a;
/* rgb */ color: rgb(181, 55, 42);
/* oklch */ color: oklch(52.2% 0.165 29.6);

Tailwind

colors: {
  custom: {
    50: '#d47664',
    500: '#b5372a',
    950: '#000000',
  },
}

SCSS

$custom: #b5372a;
$custom-light: #d47664;
$custom-dark: #000000;

JSON

{
  "hex": "#b5372a",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 42
  },
  "hsl": {
    "h": 5.612,
    "s": 62.332,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52217,
    "c": 0.16457,
    "h": 29.6
  },
  "luminance": 0.12723
}

Semantic roles & 50–950 ramp

primary

#B5372A

secondary

#73C0C8

accent

#D6E542

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B5372A

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

Preview Lab → · Contrast checker → · Palette generator →