#B53743#B53743

#B53743 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.162 H 19.4°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B53743
RGB	rgb(181, 55, 67)
HSL	hsl(354, 53%, 46%)
HSV	hsv(354, 70%, 71%)
CMYK	cmyk(0%, 69.6%, 63%, 29%)
CIE-LAB	lab(42.71, 51.30, 22.33)
CIE-LCH	lch(42.71, 55.95, 23.53°)
OKLab	oklab(52.6% 0.1524 0.0538)
OKLCH	oklch(52.6% 0.162 19.4)
XYZ	xyz(21.4375, 12.9644, 6.6827)
Luminance	0.1296 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53743 #37B5A9

analogous

#B53782 #B53743 #B56A37

triadic

#B53743 #43B537 #3743B5

tetradic

#B53743 #82B537 #37B5A9 #6A37B5

square

#B53743 #82B537 #37B5A9 #6A37B5

split-complementary

#B53743 #37B56A #3782B5

monochromatic

#571A20 #862932 #B53743 #CD5C67 #DC8B92

Accessibility & contrast

On white

5.85

#B53743 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B53743 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53743

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53743	#FFFFFF	#000000	##FFFFFF
##B53743	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)

#595443

Deuteranopia (green-blind)

#796F40

Tritanopia (blue-blind)

#C6153C

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53743;
/* rgb */ color: rgb(181, 55, 67);
/* oklch */ color: oklch(52.6% 0.162 19.4);

Tailwind

colors: {
  custom: {
    50: '#d27677',
    500: '#b53743',
    950: '#000000',
  },
}

SCSS

$custom: #b53743;
$custom-light: #d27677;
$custom-dark: #000000;

JSON

{
  "hex": "#b53743",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 67
  },
  "hsl": {
    "h": 354.286,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52603,
    "c": 0.16155,
    "h": 19.4
  },
  "luminance": 0.12961
}

Semantic roles & 50–950 ramp

primary

#B53743

secondary

#82C6BF

accent

#DDCF4B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B53743

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

Preview Lab → · Contrast checker → · Palette generator →