#B53537#B53537

#B53537 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.2% C 0.165 H 24.1°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#B53537
RGB	rgb(181, 53, 55)
HSL	hsl(359, 55%, 46%)
HSV	hsv(359, 71%, 71%)
CMYK	cmyk(0%, 70.7%, 69.6%, 29%)
CIE-LAB	lab(42.23, 51.38, 29.02)
CIE-LCH	lch(42.23, 59.01, 29.46°)
OKLab	oklab(52.18% 0.1502 0.0672)
OKLCH	oklch(52.18% 0.165 24.1)
XYZ	xyz(21.0210, 12.6489, 4.9483)
Luminance	0.1265 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53537 #35B5B3

analogous

#B53577 #B53537 #B57335

triadic

#B53537 #37B535 #3537B5

tetradic

#B53537 #77B535 #35B5B3 #7335B5

square

#B53537 #77B535 #35B5B3 #7335B5

split-complementary

#B53537 #35B573 #3577B5

monochromatic

#56191A #862729 #B53537 #CE595B #DC888A

Accessibility & contrast

On white

5.95

#B53537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B53537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53537

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53537	#FFFFFF	#000000	##FFFFFF
##B53537	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#796E33

Tritanopia (blue-blind)

#C70837

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b53537;
/* rgb */ color: rgb(181, 53, 55);
/* oklch */ color: oklch(52.2% 0.165 24.1);

Tailwind

colors: {
  custom: {
    50: '#d3756e',
    500: '#b53537',
    950: '#000000',
  },
}

SCSS

$custom: #b53537;
$custom-light: #d3756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53537",
  "rgb": {
    "r": 181,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 359.063,
    "s": 54.701,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52181,
    "c": 0.16454,
    "h": 24.1
  },
  "luminance": 0.12646
}

Semantic roles & 50–950 ramp

primary

#B53537

secondary

#80C6C5

accent

#DEDC4A

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53537

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

Preview Lab → · Contrast checker → · Palette generator →