#B53B31#B53B31

#B53B31 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.160 H 28.4°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B53B31
RGB	rgb(181, 59, 49)
HSL	hsl(5, 57%, 45%)
HSV	hsv(5, 73%, 71%)
CMYK	cmyk(0%, 67.4%, 72.9%, 29%)
CIE-LAB	lab(43.03, 48.69, 33.49)
CIE-LCH	lch(43.03, 59.09, 34.52°)
OKLab	oklab(52.75% 0.1404 0.0759)
OKLCH	oklch(52.75% 0.16 28.4)
XYZ	xyz(21.1767, 13.1765, 4.3334)
Luminance	0.1317 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53B31 #31ABB5

analogous

#B53169 #B53B31 #B57D31

triadic

#B53B31 #31B53B #3B31B5

tetradic

#B53B31 #69B531 #31ABB5 #7D31B5

square

#B53B31 #69B531 #31ABB5 #7D31B5

split-complementary

#B53B31 #31B57D #3169B5

monochromatic

#551C17 #852B24 #B53B31 #D05C53 #DD8A83

Accessibility & contrast

On white

5.78

#B53B31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B53B31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53B31

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53B31	#FFFFFF	#000000	##FFFFFF
##B53B31	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D552F

Deuteranopia (green-blind)

#7C6F2D

Tritanopia (blue-blind)

#C7183A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53b31;
/* rgb */ color: rgb(181, 59, 49);
/* oklch */ color: oklch(52.8% 0.160 28.4);

Tailwind

colors: {
  custom: {
    50: '#d3786a',
    500: '#b53b31',
    950: '#000000',
  },
}

SCSS

$custom: #b53b31;
$custom-light: #d3786a;
$custom-dark: #000000;

JSON

{
  "hex": "#b53b31",
  "rgb": {
    "r": 181,
    "g": 59,
    "b": 49
  },
  "hsl": {
    "h": 4.545,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52752,
    "c": 0.15961,
    "h": 28.4
  },
  "luminance": 0.13173
}

Semantic roles & 50–950 ramp

primary

#B53B31

secondary

#7BC1C7

accent

#D5E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53B31

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

Preview Lab → · Contrast checker → · Palette generator →