#B53143#B53143

#B53143 is a mid, vivid red. Relative luminance 0.124; OKLCH L 52.0% C 0.168 H 17.8°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B53143
RGB	rgb(181, 49, 67)
HSL	hsl(352, 57%, 45%)
HSV	hsv(352, 73%, 71%)
CMYK	cmyk(0%, 72.9%, 63%, 29%)
CIE-LAB	lab(41.89, 53.56, 21.27)
CIE-LCH	lch(41.89, 57.63, 21.66°)
OKLab	oklab(51.99% 0.1596 0.0513)
OKLCH	oklch(51.99% 0.168 17.8)
XYZ	xyz(21.1697, 12.4287, 6.5934)
Luminance	0.1243 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53143 #31B5A3

analogous

#B53185 #B53143 #B56131

triadic

#B53143 #43B531 #3143B5

tetradic

#B53143 #85B531 #31B5A3 #6131B5

square

#B53143 #85B531 #31B5A3 #6131B5

split-complementary

#B53143 #31B561 #3185B5

monochromatic

#55171F #852431 #B53143 #D05364 #DD838F

Accessibility & contrast

On white

6.03

#B53143 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B53143 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53143

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53143	#FFFFFF	#000000	##FFFFFF
##B53143	1.00	6.03	3.49	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#555143

Deuteranopia (green-blind)

#776D3F

Tritanopia (blue-blind)

#C60239

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53143;
/* rgb */ color: rgb(181, 49, 67);
/* oklch */ color: oklch(52.0% 0.168 17.8);

Tailwind

colors: {
  custom: {
    50: '#d27377',
    500: '#b53143',
    950: '#000000',
  },
}

SCSS

$custom: #b53143;
$custom-light: #d27377;
$custom-dark: #000000;

JSON

{
  "hex": "#b53143",
  "rgb": {
    "r": 181,
    "g": 49,
    "b": 67
  },
  "hsl": {
    "h": 351.818,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51992,
    "c": 0.16762,
    "h": 17.8
  },
  "luminance": 0.12426
}

Semantic roles & 50–950 ramp

primary

#B53143

secondary

#7BC7BC

accent

#E1CC47

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B53143

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

Preview Lab → · Contrast checker → · Palette generator →