#B53A37#B53A37

#B53A37 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.160 H 25.7°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#B53A37
RGB	rgb(181, 58, 55)
HSL	hsl(1, 53%, 46%)
HSV	hsv(1, 70%, 71%)
CMYK	cmyk(0%, 68%, 69.6%, 29%)
CIE-LAB	lab(42.96, 49.39, 29.89)
CIE-LCH	lch(42.96, 57.74, 31.18°)
OKLab	oklab(52.73% 0.1439 0.0692)
OKLCH	oklch(52.73% 0.16 25.7)
XYZ	xyz(21.2610, 13.1288, 5.0283)
Luminance	0.1313 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A37 #37B2B5

analogous

#B53773 #B53A37 #B57937

triadic

#B53A37 #37B53A #3A37B5

tetradic

#B53A37 #73B537 #37B2B5 #7937B5

square

#B53A37 #73B537 #37B2B5 #7937B5

split-complementary

#B53A37 #37B579 #3773B5

monochromatic

#571C1A #862B29 #B53A37 #CD5F5C #DC8D8B

Accessibility & contrast

On white

5.79

#B53A37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B53A37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A37

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A37	#FFFFFF	#000000	##FFFFFF
##B53A37	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5536

Deuteranopia (green-blind)

#7B6F33

Tritanopia (blue-blind)

#C7173B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53a37;
/* rgb */ color: rgb(181, 58, 55);
/* oklch */ color: oklch(52.7% 0.160 25.7);

Tailwind

colors: {
  custom: {
    50: '#d3776e',
    500: '#b53a37',
    950: '#000000',
  },
}

SCSS

$custom: #b53a37;
$custom-light: #d3776e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a37",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 55
  },
  "hsl": {
    "h": 1.429,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52725,
    "c": 0.15964,
    "h": 25.7
  },
  "luminance": 0.13126
}

Semantic roles & 50–950 ramp

primary

#B53A37

secondary

#82C4C6

accent

#D9DD4B

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53A37

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

Preview Lab → · Contrast checker → · Palette generator →