#B53F2A#B53F2A

#B53F2A is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.157 H 32.4°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#B53F2A
RGB	rgb(181, 63, 42)
HSL	hsl(9, 62%, 44%)
HSV	hsv(9, 77%, 71%)
CMYK	cmyk(0%, 65.2%, 76.8%, 29%)
CIE-LAB	lab(43.58, 46.68, 38.02)
CIE-LCH	lch(43.58, 60.20, 39.17°)
OKLab	oklab(53.14% 0.1327 0.0841)
OKLCH	oklch(53.14% 0.157 32.4)
XYZ	xyz(21.2538, 13.5490, 3.6861)
Luminance	0.1355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53F2A #2AA0B5

analogous

#B52A5A #B53F2A #B5842A

triadic

#B53F2A #2AB53F #3F2AB5

tetradic

#B53F2A #5AB52A #2AA0B5 #842AB5

square

#B53F2A #5AB52A #2AA0B5 #842AB5

split-complementary

#B53F2A #2AB584 #2A5AB5

monochromatic

#521C13 #832E1E #B53F2A #D45D48 #E08979

Accessibility & contrast

On white

5.66

#B53F2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#B53F2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53F2A

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53F2A	#FFFFFF	#000000	##FFFFFF
##B53F2A	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605727

Deuteranopia (green-blind)

#7E7126

Tritanopia (blue-blind)

#C71F3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b53f2a;
/* rgb */ color: rgb(181, 63, 42);
/* oklch */ color: oklch(53.1% 0.157 32.4);

Tailwind

colors: {
  custom: {
    50: '#d37a65',
    500: '#b53f2a',
    950: '#000000',
  },
}

SCSS

$custom: #b53f2a;
$custom-light: #d37a65;
$custom-dark: #000000;

JSON

{
  "hex": "#b53f2a",
  "rgb": {
    "r": 181,
    "g": 63,
    "b": 42
  },
  "hsl": {
    "h": 9.065,
    "s": 62.332,
    "l": 43.725
  },
  "oklch": {
    "l": 0.5314,
    "c": 0.15711,
    "h": 32.4
  },
  "luminance": 0.13546
}

Semantic roles & 50–950 ramp

primary

#B53F2A

secondary

#73BBC8

accent

#CDE542

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A05

muted

#847C7A

Preview Lab

Preview with #B53F2A

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

Preview Lab → · Contrast checker → · Palette generator →