#B53639#B53639

#B53639 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.163 H 23.6°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B53639
RGB	rgb(181, 54, 57)
HSL	hsl(359, 54%, 46%)
HSV	hsv(359, 70%, 71%)
CMYK	cmyk(0%, 70.2%, 68.5%, 29%)
CIE-LAB	lab(42.40, 51.10, 28.03)
CIE-LCH	lch(42.40, 58.28, 28.74°)
OKLab	oklab(52.32% 0.1497 0.0654)
OKLCH	oklch(52.32% 0.163 23.6)
XYZ	xyz(21.1160, 12.7606, 5.2213)
Luminance	0.1276 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53639 #36B5B2

analogous

#B53678 #B53639 #B57236

triadic

#B53639 #39B536 #3639B5

tetradic

#B53639 #78B536 #36B5B2 #7236B5

square

#B53639 #78B536 #36B5B2 #7236B5

split-complementary

#B53639 #36B572 #3678B5

monochromatic

#571A1B #86282A #B53639 #CE5A5D #DC898B

Accessibility & contrast

On white

5.91

#B53639 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B53639 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53639

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53639	#FFFFFF	#000000	##FFFFFF
##B53639	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595338

Deuteranopia (green-blind)

#796E35

Tritanopia (blue-blind)

#C70D38

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b53639;
/* rgb */ color: rgb(181, 54, 57);
/* oklch */ color: oklch(52.3% 0.163 23.6);

Tailwind

colors: {
  custom: {
    50: '#d3756f',
    500: '#b53639',
    950: '#000000',
  },
}

SCSS

$custom: #b53639;
$custom-light: #d3756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b53639",
  "rgb": {
    "r": 181,
    "g": 54,
    "b": 57
  },
  "hsl": {
    "h": 358.583,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52318,
    "c": 0.16335,
    "h": 23.6
  },
  "luminance": 0.12757
}

Semantic roles & 50–950 ramp

primary

#B53639

secondary

#81C6C4

accent

#DDDA4A

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53639

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

Preview Lab → · Contrast checker → · Palette generator →