#B53839#B53839

#B53839 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.161 H 24.2°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B53839
RGB	rgb(181, 56, 57)
HSL	hsl(360, 53%, 46%)
HSV	hsv(360, 69%, 71%)
CMYK	cmyk(0%, 69.1%, 68.5%, 29%)
CIE-LAB	lab(42.69, 50.31, 28.38)
CIE-LCH	lch(42.69, 57.76, 29.43°)
OKLab	oklab(52.53% 0.1472 0.0661)
OKLCH	oklch(52.53% 0.161 24.2)
XYZ	xyz(21.2110, 12.9506, 5.2529)
Luminance	0.1295 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53839 #38B5B4

analogous

#B53878 #B53839 #B57638

triadic

#B53839 #39B538 #3839B5

tetradic

#B53839 #78B538 #38B5B4 #7638B5

square

#B53839 #78B538 #38B5B4 #7638B5

split-complementary

#B53839 #38B576 #3878B5

monochromatic

#581B1C #862A2A #B53839 #CD5D5E #DB8C8D

Accessibility & contrast

On white

5.85

#B53839 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B53839 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53839

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53839	#FFFFFF	#000000	##FFFFFF
##B53839	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5438

Deuteranopia (green-blind)

#7A6F35

Tritanopia (blue-blind)

#C7133A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53839;
/* rgb */ color: rgb(181, 56, 57);
/* oklch */ color: oklch(52.5% 0.161 24.2);

Tailwind

colors: {
  custom: {
    50: '#d3766f',
    500: '#b53839',
    950: '#000000',
  },
}

SCSS

$custom: #b53839;
$custom-light: #d3766f;
$custom-dark: #000000;

JSON

{
  "hex": "#b53839",
  "rgb": {
    "r": 181,
    "g": 56,
    "b": 57
  },
  "hsl": {
    "h": 359.52,
    "s": 52.743,
    "l": 46.471
  },
  "oklch": {
    "l": 0.52534,
    "c": 0.16138,
    "h": 24.2
  },
  "luminance": 0.12948
}

Semantic roles & 50–950 ramp

primary

#B53839

secondary

#83C6C5

accent

#DCDB4C

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B53839

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

Preview Lab → · Contrast checker → · Palette generator →