#B53437#B53437

#B53437 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.165 H 23.8°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B53437
RGB	rgb(181, 52, 55)
HSL	hsl(359, 55%, 46%)
HSV	hsv(359, 71%, 71%)
CMYK	cmyk(0%, 71.3%, 69.6%, 29%)
CIE-LAB	lab(42.09, 51.76, 28.86)
CIE-LCH	lch(42.09, 59.26, 29.14°)
OKLab	oklab(52.08% 0.1514 0.0669)
OKLCH	oklch(52.08% 0.165 23.8)
XYZ	xyz(20.9759, 12.5587, 4.9333)
Luminance	0.1256 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53437 #34B5B2

analogous

#B53477 #B53437 #B57234

triadic

#B53437 #37B534 #3437B5

tetradic

#B53437 #77B534 #34B5B2 #7234B5

square

#B53437 #77B534 #34B5B2 #7234B5

split-complementary

#B53437 #34B572 #3477B5

monochromatic

#56191A #852629 #B53437 #CF575A #DC8789

Accessibility & contrast

On white

5.98

#B53437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B53437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53437

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53437	#FFFFFF	#000000	##FFFFFF
##B53437	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585236

Deuteranopia (green-blind)

#796D33

Tritanopia (blue-blind)

#C70536

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53437;
/* rgb */ color: rgb(181, 52, 55);
/* oklch */ color: oklch(52.1% 0.165 23.8);

Tailwind

colors: {
  custom: {
    50: '#d3746e',
    500: '#b53437',
    950: '#000000',
  },
}

SCSS

$custom: #b53437;
$custom-light: #d3746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53437",
  "rgb": {
    "r": 181,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.605,
    "s": 55.365,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52077,
    "c": 0.16549,
    "h": 23.8
  },
  "luminance": 0.12556
}

Semantic roles & 50–950 ramp

primary

#B53437

secondary

#7FC6C5

accent

#DFDB49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53437

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

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