#B53637#B53637

#B53637 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.164 H 24.4°. Best body text is #FFFFFF at 5.92:1 contrast (WCAG AA passes).

Color values

HEX	#B53637
RGB	rgb(181, 54, 55)
HSL	hsl(360, 54%, 46%)
HSV	hsv(360, 70%, 71%)
CMYK	cmyk(0%, 70.2%, 69.6%, 29%)
CIE-LAB	lab(42.37, 51.00, 29.19)
CIE-LCH	lch(42.37, 58.76, 29.79°)
OKLab	oklab(52.29% 0.1489 0.0676)
OKLCH	oklch(52.29% 0.164 24.4)
XYZ	xyz(21.0671, 12.7410, 4.9636)
Luminance	0.1274 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53637 #36B5B4

analogous

#B53676 #B53637 #B57436

triadic

#B53637 #37B536 #3637B5

tetradic

#B53637 #76B536 #36B5B4 #7436B5

square

#B53637 #76B536 #36B5B4 #7436B5

split-complementary

#B53637 #36B574 #3676B5

monochromatic

#571A1A #862829 #B53637 #CE5A5B #DC898A

Accessibility & contrast

On white

5.92

#B53637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B53637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53637

5.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53637	#FFFFFF	#000000	##FFFFFF
##B53637	1.00	5.92	3.55	5.92
#FFFFFF	5.92	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5336

Deuteranopia (green-blind)

#796E33

Tritanopia (blue-blind)

#C70C38

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b53637;
/* rgb */ color: rgb(181, 54, 55);
/* oklch */ color: oklch(52.3% 0.164 24.4);

Tailwind

colors: {
  custom: {
    50: '#d3756e',
    500: '#b53637',
    950: '#000000',
  },
}

SCSS

$custom: #b53637;
$custom-light: #d3756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53637",
  "rgb": {
    "r": 181,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.528,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52286,
    "c": 0.16357,
    "h": 24.4
  },
  "luminance": 0.12738
}

Semantic roles & 50–950 ramp

primary

#B53637

secondary

#81C6C6

accent

#DDDC4A

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53637

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

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