#B53A3A#B53A3A

#B53A3A is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.159 H 24.4°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B53A3A
RGB	rgb(181, 58, 58)
HSL	hsl(0, 51%, 47%)
HSV	hsv(0, 68%, 71%)
CMYK	cmyk(0%, 68%, 68%, 29%)
CIE-LAB	lab(43.00, 49.56, 28.16)
CIE-LCH	lch(43.00, 57.00, 29.61°)
OKLab	oklab(52.77% 0.145 0.0658)
OKLCH	oklch(52.77% 0.159 24.4)
XYZ	xyz(21.3351, 13.1584, 5.4186)
Luminance	0.1316 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A3A #3AB5B5

analogous

#B53A78 #B53A3A #B5783A

triadic

#B53A3A #3AB53A #3A3AB5

tetradic

#B53A3A #78B53A #3AB5B5 #783AB5

square

#B53A3A #78B53A #3AB5B5 #783AB5

split-complementary

#B53A3A #3AB578 #3A78B5

monochromatic

#581C1C #872B2B #B53A3A #CC6060 #DB8E8E

Accessibility & contrast

On white

5.78

#B53A3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B53A3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A3A

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A3A	#FFFFFF	#000000	##FFFFFF
##B53A3A	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)

#5C5539

Deuteranopia (green-blind)

#7B6F36

Tritanopia (blue-blind)

#C7183B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53a3a;
/* rgb */ color: rgb(181, 58, 58);
/* oklch */ color: oklch(52.8% 0.159 24.4);

Tailwind

colors: {
  custom: {
    50: '#d27770',
    500: '#b53a3a',
    950: '#000000',
  },
}

SCSS

$custom: #b53a3a;
$custom-light: #d27770;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a3a",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 58
  },
  "hsl": {
    "h": 0,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52772,
    "c": 0.15924,
    "h": 24.4
  },
  "luminance": 0.13155
}

Semantic roles & 50–950 ramp

primary

#B53A3A

secondary

#85C6C6

accent

#DBDB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B53A3A

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

Preview Lab → · Contrast checker → · Palette generator →