#B53B3A#B53B3A

#B53B3A is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.158 H 24.7°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B53B3A
RGB	rgb(181, 59, 58)
HSL	hsl(0, 51%, 47%)
HSV	hsv(0, 68%, 71%)
CMYK	cmyk(0%, 67.4%, 68%, 29%)
CIE-LAB	lab(43.15, 49.14, 28.35)
CIE-LCH	lch(43.15, 56.73, 29.98°)
OKLab	oklab(52.89% 0.1437 0.0662)
OKLCH	oklch(52.89% 0.158 24.7)
XYZ	xyz(21.3860, 13.2602, 5.4355)
Luminance	0.1326 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53B3A #3AB4B5

analogous

#B53A77 #B53B3A #B5793A

triadic

#B53B3A #3AB53B #3B3AB5

tetradic

#B53B3A #77B53A #3AB4B5 #793AB5

square

#B53B3A #77B53A #3AB4B5 #793AB5

split-complementary

#B53B3A #3AB579 #3A77B5

monochromatic

#581D1C #872C2B #B53B3A #CC6160 #DB8F8E

Accessibility & contrast

On white

5.75

#B53B3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B53B3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53B3A

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53B3A	#FFFFFF	#000000	##FFFFFF
##B53B3A	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5539

Deuteranopia (green-blind)

#7B7036

Tritanopia (blue-blind)

#C71B3C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53b3a;
/* rgb */ color: rgb(181, 59, 58);
/* oklch */ color: oklch(52.9% 0.158 24.7);

Tailwind

colors: {
  custom: {
    50: '#d27870',
    500: '#b53b3a',
    950: '#000000',
  },
}

SCSS

$custom: #b53b3a;
$custom-light: #d27870;
$custom-dark: #000000;

JSON

{
  "hex": "#b53b3a",
  "rgb": {
    "r": 181,
    "g": 59,
    "b": 58
  },
  "hsl": {
    "h": 0.488,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52886,
    "c": 0.15823,
    "h": 24.7
  },
  "luminance": 0.13257
}

Semantic roles & 50–950 ramp

primary

#B53B3A

secondary

#85C5C6

accent

#DADB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B53B3A

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

Preview Lab → · Contrast checker → · Palette generator →