#B43937#B43937

#B43937 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.160 H 25.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B43937
RGB	rgb(180, 57, 55)
HSL	hsl(1, 53%, 46%)
HSV	hsv(1, 69%, 71%)
CMYK	cmyk(0%, 68.3%, 69.4%, 29.4%)
CIE-LAB	lab(42.62, 49.47, 29.45)
CIE-LCH	lch(42.62, 57.57, 30.77°)
OKLab	oklab(52.44% 0.1442 0.0682)
OKLCH	oklch(52.44% 0.16 25.3)
XYZ	xyz(20.9773, 12.9084, 5.0007)
Luminance	0.1290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43937 #37B2B4

analogous

#B43773 #B43937 #B47737

triadic

#B43937 #37B439 #3937B4

tetradic

#B43937 #73B437 #37B2B4 #7737B4

square

#B43937 #73B437 #37B2B4 #7737B4

split-complementary

#B43937 #37B477 #3773B4

monochromatic

#561B1A #852A29 #B43937 #CD5D5B #DB8B8A

Accessibility & contrast

On white

5.86

#B43937 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B43937 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43937

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43937	#FFFFFF	#000000	##FFFFFF
##B43937	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5436

Deuteranopia (green-blind)

#7A6E33

Tritanopia (blue-blind)

#C6163A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b43937;
/* rgb */ color: rgb(180, 57, 55);
/* oklch */ color: oklch(52.4% 0.160 25.3);

Tailwind

colors: {
  custom: {
    50: '#d2776e',
    500: '#b43937',
    950: '#000000',
  },
}

SCSS

$custom: #b43937;
$custom-light: #d2776e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43937",
  "rgb": {
    "r": 180,
    "g": 57,
    "b": 55
  },
  "hsl": {
    "h": 0.96,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52443,
    "c": 0.15957,
    "h": 25.3
  },
  "luminance": 0.12905
}

Semantic roles & 50–950 ramp

primary

#B43937

secondary

#81C4C6

accent

#DADD4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B43937

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

Preview Lab → · Contrast checker → · Palette generator →