#B53A3F#B53A3F

#B53A3F is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.9% C 0.159 H 22.2°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#B53A3F
RGB	rgb(181, 58, 63)
HSL	hsl(358, 51%, 47%)
HSV	hsv(358, 68%, 71%)
CMYK	cmyk(0%, 68%, 65.2%, 29%)
CIE-LAB	lab(43.08, 49.84, 25.25)
CIE-LCH	lch(43.08, 55.87, 26.86°)
OKLab	oklab(52.86% 0.1469 0.0599)
OKLCH	oklch(52.86% 0.159 22.2)
XYZ	xyz(21.4685, 13.2118, 6.1213)
Luminance	0.1321 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A3F #3AB5B0

analogous

#B53A7D #B53A3F #B5733A

triadic

#B53A3F #3FB53A #3A3FB5

tetradic

#B53A3F #7DB53A #3AB5B0 #733AB5

square

#B53A3F #7DB53A #3AB5B0 #733AB5

split-complementary

#B53A3F #3AB573 #3A7DB5

monochromatic

#581C1F #872B2F #B53A3F #CC6065 #DB8E92

Accessibility & contrast

On white

5.77

#B53A3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#B53A3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A3F

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A3F	#FFFFFF	#000000	##FFFFFF
##B53A3F	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)

#5B553E

Deuteranopia (green-blind)

#7A6F3C

Tritanopia (blue-blind)

#C71A3D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53a3f;
/* rgb */ color: rgb(181, 58, 63);
/* oklch */ color: oklch(52.9% 0.159 22.2);

Tailwind

colors: {
  custom: {
    50: '#d27874',
    500: '#b53a3f',
    950: '#000000',
  },
}

SCSS

$custom: #b53a3f;
$custom-light: #d27874;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a3f",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 63
  },
  "hsl": {
    "h": 357.561,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52857,
    "c": 0.1587,
    "h": 22.2
  },
  "luminance": 0.13209
}

Semantic roles & 50–950 ramp

primary

#B53A3F

secondary

#85C6C3

accent

#DBD54D

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B53A3F

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

Preview Lab → · Contrast checker → · Palette generator →