#B53B33#B53B33

#B53B33 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.159 H 27.6°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#B53B33
RGB	rgb(181, 59, 51)
HSL	hsl(4, 56%, 45%)
HSV	hsv(4, 72%, 71%)
CMYK	cmyk(0%, 67.4%, 71.8%, 29%)
CIE-LAB	lab(43.05, 48.78, 32.36)
CIE-LCH	lch(43.05, 58.54, 33.56°)
OKLab	oklab(52.78% 0.1411 0.0739)
OKLCH	oklch(52.78% 0.159 27.6)
XYZ	xyz(21.2199, 13.1938, 4.5606)
Luminance	0.1319 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53B33 #33ADB5

analogous

#B5336C #B53B33 #B57C33

triadic

#B53B33 #33B53B #3B33B5

tetradic

#B53B33 #6CB533 #33ADB5 #7C33B5

square

#B53B33 #6CB533 #33ADB5 #7C33B5

split-complementary

#B53B33 #33B57C #336CB5

monochromatic

#561C18 #852B26 #B53B33 #CF5D56 #DD8B86

Accessibility & contrast

On white

5.77

#B53B33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B53B33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53B33

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53B33	#FFFFFF	#000000	##FFFFFF
##B53B33	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5531

Deuteranopia (green-blind)

#7C6F2F

Tritanopia (blue-blind)

#C7183A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53b33;
/* rgb */ color: rgb(181, 59, 51);
/* oklch */ color: oklch(52.8% 0.159 27.6);

Tailwind

colors: {
  custom: {
    50: '#d3786b',
    500: '#b53b33',
    950: '#000000',
  },
}

SCSS

$custom: #b53b33;
$custom-light: #d3786b;
$custom-dark: #000000;

JSON

{
  "hex": "#b53b33",
  "rgb": {
    "r": 181,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 3.692,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.5278,
    "c": 0.15927,
    "h": 27.6
  },
  "luminance": 0.13191
}

Semantic roles & 50–950 ramp

primary

#B53B33

secondary

#7DC2C6

accent

#D6DF48

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53B33

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

Preview Lab → · Contrast checker → · Palette generator →