#B53740#B53740

#B53740 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.162 H 20.8°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B53740
RGB	rgb(181, 55, 64)
HSL	hsl(356, 53%, 46%)
HSV	hsv(356, 70%, 71%)
CMYK	cmyk(0%, 69.6%, 64.6%, 29%)
CIE-LAB	lab(42.66, 51.11, 24.10)
CIE-LCH	lch(42.66, 56.51, 25.25°)
OKLab	oklab(52.55% 0.1512 0.0575)
OKLCH	oklch(52.55% 0.162 20.8)
XYZ	xyz(21.3499, 12.9294, 6.2209)
Luminance	0.1293 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53740 #37B5AC

analogous

#B5377F #B53740 #B56D37

triadic

#B53740 #40B537 #3740B5

tetradic

#B53740 #7FB537 #37B5AC #6D37B5

square

#B53740 #7FB537 #37B5AC #6D37B5

split-complementary

#B53740 #37B56D #377FB5

monochromatic

#571A1F #86292F #B53740 #CD5C64 #DC8B91

Accessibility & contrast

On white

5.86

#B53740 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B53740 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53740

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53740	#FFFFFF	#000000	##FFFFFF
##B53740	1.00	5.86	3.59	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59543F

Deuteranopia (green-blind)

#796F3C

Tritanopia (blue-blind)

#C7143B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53740;
/* rgb */ color: rgb(181, 55, 64);
/* oklch */ color: oklch(52.5% 0.162 20.8);

Tailwind

colors: {
  custom: {
    50: '#d27674',
    500: '#b53740',
    950: '#000000',
  },
}

SCSS

$custom: #b53740;
$custom-light: #d27674;
$custom-dark: #000000;

JSON

{
  "hex": "#b53740",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 64
  },
  "hsl": {
    "h": 355.714,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52546,
    "c": 0.16172,
    "h": 20.8
  },
  "luminance": 0.12926
}

Semantic roles & 50–950 ramp

primary

#B53740

secondary

#82C6C1

accent

#DDD24B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B53740

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

Preview Lab → · Contrast checker → · Palette generator →