#B43037#B43037

#B43037 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.168 H 22.7°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#B43037
RGB	rgb(180, 48, 55)
HSL	hsl(357, 58%, 45%)
HSV	hsv(357, 73%, 71%)
CMYK	cmyk(0%, 73.3%, 69.4%, 29.4%)
CIE-LAB	lab(41.37, 52.92, 27.94)
CIE-LCH	lch(41.37, 59.84, 27.83°)
OKLab	oklab(51.51% 0.1552 0.0649)
OKLCH	oklch(51.51% 0.168 22.7)
XYZ	xyz(20.5712, 12.0961, 4.8653)
Luminance	0.1209 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43037 #30B4AD

analogous

#B43079 #B43037 #B46B30

triadic

#B43037 #37B430 #3037B4

tetradic

#B43037 #79B430 #30B4AD #6B30B4

square

#B43037 #79B430 #30B4AD #6B30B4

split-complementary

#B43037 #30B46B #3079B4

monochromatic

#531619 #842328 #B43037 #D15157 #DD8186

Accessibility & contrast

On white

6.14

#B43037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B43037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43037

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43037	#FFFFFF	#000000	##FFFFFF
##B43037	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565036

Deuteranopia (green-blind)

#776C33

Tritanopia (blue-blind)

#C60034

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b43037;
/* rgb */ color: rgb(180, 48, 55);
/* oklch */ color: oklch(51.5% 0.168 22.7);

Tailwind

colors: {
  custom: {
    50: '#d2726e',
    500: '#b43037',
    950: '#000000',
  },
}

SCSS

$custom: #b43037;
$custom-light: #d2726e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43037",
  "rgb": {
    "r": 180,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.818,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51505,
    "c": 0.1682,
    "h": 22.7
  },
  "luminance": 0.12093
}

Semantic roles & 50–950 ramp

primary

#B43037

secondary

#79C6C2

accent

#E1D947

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B43037

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

Preview Lab → · Contrast checker → · Palette generator →