#B53B37#B53B37

#B53B37 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.159 H 26.0°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#B53B37
RGB	rgb(181, 59, 55)
HSL	hsl(2, 53%, 46%)
HSV	hsv(2, 70%, 71%)
CMYK	cmyk(0%, 67.4%, 69.6%, 29%)
CIE-LAB	lab(43.11, 48.98, 30.08)
CIE-LCH	lch(43.11, 57.48, 31.55°)
OKLab	oklab(52.84% 0.1426 0.0696)
OKLCH	oklch(52.84% 0.159 26)
XYZ	xyz(21.3119, 13.2306, 5.0452)
Luminance	0.1323 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53B37 #37B1B5

analogous

#B53772 #B53B37 #B57A37

triadic

#B53B37 #37B53B #3B37B5

tetradic

#B53B37 #72B537 #37B1B5 #7A37B5

square

#B53B37 #72B537 #37B1B5 #7A37B5

split-complementary

#B53B37 #37B57A #3772B5

monochromatic

#571C1A #862C29 #B53B37 #CD5F5C #DC8D8B

Accessibility & contrast

On white

5.76

#B53B37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B53B37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53B37

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53B37	#FFFFFF	#000000	##FFFFFF
##B53B37	1.00	5.76	3.65	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5536

Deuteranopia (green-blind)

#7B7033

Tritanopia (blue-blind)

#C71A3B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53b37;
/* rgb */ color: rgb(181, 59, 55);
/* oklch */ color: oklch(52.8% 0.159 26.0);

Tailwind

colors: {
  custom: {
    50: '#d3786e',
    500: '#b53b37',
    950: '#000000',
  },
}

SCSS

$custom: #b53b37;
$custom-light: #d3786e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53b37",
  "rgb": {
    "r": 181,
    "g": 59,
    "b": 55
  },
  "hsl": {
    "h": 1.905,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52839,
    "c": 0.15865,
    "h": 26
  },
  "luminance": 0.13228
}

Semantic roles & 50–950 ramp

primary

#B53B37

secondary

#82C4C6

accent

#D8DD4B

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B53B37

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

Preview Lab → · Contrast checker → · Palette generator →