#B53640#B53640

#B53640 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.163 H 20.5°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B53640
RGB	rgb(181, 54, 64)
HSL	hsl(355, 54%, 46%)
HSV	hsv(355, 70%, 71%)
CMYK	cmyk(0%, 70.2%, 64.6%, 29%)
CIE-LAB	lab(42.51, 51.50, 23.92)
CIE-LCH	lch(42.51, 56.79, 24.91°)
OKLab	oklab(52.44% 0.1524 0.0571)
OKLCH	oklch(52.44% 0.163 20.5)
XYZ	xyz(21.3028, 12.8353, 6.2052)
Luminance	0.1283 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53640 #36B5AB

analogous

#B5367F #B53640 #B56B36

triadic

#B53640 #40B536 #3640B5

tetradic

#B53640 #7FB536 #36B5AB #6B36B5

square

#B53640 #7FB536 #36B5AB #6B36B5

split-complementary

#B53640 #36B56B #367FB5

monochromatic

#571A1F #86282F #B53640 #CE5A63 #DC8990

Accessibility & contrast

On white

5.89

#B53640 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B53640 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53640

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53640	#FFFFFF	#000000	##FFFFFF
##B53640	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58533F

Deuteranopia (green-blind)

#796E3C

Tritanopia (blue-blind)

#C7113B

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b53640;
/* rgb */ color: rgb(181, 54, 64);
/* oklch */ color: oklch(52.4% 0.163 20.5);

Tailwind

colors: {
  custom: {
    50: '#d27674',
    500: '#b53640',
    950: '#000000',
  },
}

SCSS

$custom: #b53640;
$custom-light: #d27674;
$custom-dark: #000000;

JSON

{
  "hex": "#b53640",
  "rgb": {
    "r": 181,
    "g": 54,
    "b": 64
  },
  "hsl": {
    "h": 355.276,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5244,
    "c": 0.16274,
    "h": 20.5
  },
  "luminance": 0.12832
}

Semantic roles & 50–950 ramp

primary

#B53640

secondary

#81C6C1

accent

#DDD24A

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B53640

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

Preview Lab → · Contrast checker → · Palette generator →