#B53A2A#B53A2A

#B53A2A is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.162 H 30.6°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B53A2A
RGB	rgb(181, 58, 42)
HSL	hsl(7, 62%, 44%)
HSV	hsv(7, 77%, 71%)
CMYK	cmyk(0%, 68%, 76.8%, 29%)
CIE-LAB	lab(42.79, 48.80, 37.19)
CIE-LCH	lch(42.79, 61.35, 37.31°)
OKLab	oklab(52.55% 0.1393 0.0823)
OKLCH	oklch(52.55% 0.162 30.6)
XYZ	xyz(20.9894, 13.0201, 3.5980)
Luminance	0.1302 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A2A #2AA5B5

analogous

#B52A5F #B53A2A #B57F2A

triadic

#B53A2A #2AB53A #3A2AB5

tetradic

#B53A2A #5FB52A #2AA5B5 #7F2AB5

square

#B53A2A #5FB52A #2AA5B5 #7F2AB5

split-complementary

#B53A2A #2AB57F #2A5FB5

monochromatic

#521A13 #832A1E #B53A2A #D45848 #E08579

Accessibility & contrast

On white

5.83

#B53A2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B53A2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A2A

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A2A	#FFFFFF	#000000	##FFFFFF
##B53A2A	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5427

Deuteranopia (green-blind)

#7C6F25

Tritanopia (blue-blind)

#C71337

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53a2a;
/* rgb */ color: rgb(181, 58, 42);
/* oklch */ color: oklch(52.5% 0.162 30.6);

Tailwind

colors: {
  custom: {
    50: '#d37765',
    500: '#b53a2a',
    950: '#000000',
  },
}

SCSS

$custom: #b53a2a;
$custom-light: #d37765;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a2a",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 42
  },
  "hsl": {
    "h": 6.906,
    "s": 62.332,
    "l": 43.725
  },
  "oklch": {
    "l": 0.5255,
    "c": 0.1618,
    "h": 30.6
  },
  "luminance": 0.13017
}

Semantic roles & 50–950 ramp

primary

#B53A2A

secondary

#73BEC8

accent

#D3E542

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B53A2A

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

Preview Lab → · Contrast checker → · Palette generator →