#B53E37#B53E37

#B53E37 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.156 H 27.1°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B53E37
RGB	rgb(181, 62, 55)
HSL	hsl(3, 53%, 46%)
HSV	hsv(3, 70%, 71%)
CMYK	cmyk(0%, 65.7%, 69.6%, 29%)
CIE-LAB	lab(43.58, 47.71, 30.63)
CIE-LCH	lch(43.58, 56.70, 32.70°)
OKLab	oklab(53.19% 0.1386 0.0708)
OKLCH	oklch(53.19% 0.156 27.1)
XYZ	xyz(21.4705, 13.5479, 5.0981)
Luminance	0.1354 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53E37 #37AEB5

analogous

#B5376F #B53E37 #B57D37

triadic

#B53E37 #37B53E #3E37B5

tetradic

#B53E37 #6FB537 #37AEB5 #7D37B5

square

#B53E37 #6FB537 #37AEB5 #7D37B5

split-complementary

#B53E37 #37B57D #376FB5

monochromatic

#571E1A #862E29 #B53E37 #CD625C #DC8F8B

Accessibility & contrast

On white

5.66

#B53E37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B53E37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53E37

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53E37	#FFFFFF	#000000	##FFFFFF
##B53E37	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5735

Deuteranopia (green-blind)

#7C7133

Tritanopia (blue-blind)

#C7203D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b53e37;
/* rgb */ color: rgb(181, 62, 55);
/* oklch */ color: oklch(53.2% 0.156 27.1);

Tailwind

colors: {
  custom: {
    50: '#d2796e',
    500: '#b53e37',
    950: '#000000',
  },
}

SCSS

$custom: #b53e37;
$custom-light: #d2796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53e37",
  "rgb": {
    "r": 181,
    "g": 62,
    "b": 55
  },
  "hsl": {
    "h": 3.333,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.5319,
    "c": 0.15561,
    "h": 27.1
  },
  "luminance": 0.13545
}

Semantic roles & 50–950 ramp

primary

#B53E37

secondary

#82C2C6

accent

#D5DD4B

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A07

muted

#837C7A

Preview Lab

Preview with #B53E37

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

Preview Lab → · Contrast checker → · Palette generator →