#B43637#B43637

#B43637 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.163 H 24.4°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B43637
RGB	rgb(180, 54, 55)
HSL	hsl(360, 54%, 46%)
HSV	hsv(360, 70%, 71%)
CMYK	cmyk(0%, 70%, 69.4%, 29.4%)
CIE-LAB	lab(42.19, 50.67, 28.93)
CIE-LCH	lch(42.19, 58.34, 29.72°)
OKLab	oklab(52.11% 0.148 0.0671)
OKLCH	oklch(52.11% 0.163 24.4)
XYZ	xyz(20.8334, 12.6205, 4.9527)
Luminance	0.1262 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43637 #36B4B3

analogous

#B43676 #B43637 #B47436

triadic

#B43637 #37B436 #3637B4

tetradic

#B43637 #76B436 #36B4B3 #7436B4

square

#B43637 #76B436 #36B4B3 #7436B4

split-complementary

#B43637 #36B474 #3676B4

monochromatic

#561A1A #852829 #B43637 #CD5A5B #DC898A

Accessibility & contrast

On white

5.96

#B43637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B43637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43637

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43637	#FFFFFF	#000000	##FFFFFF
##B43637	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#796E33

Tritanopia (blue-blind)

#C60D38

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43637;
/* rgb */ color: rgb(180, 54, 55);
/* oklch */ color: oklch(52.1% 0.163 24.4);

Tailwind

colors: {
  custom: {
    50: '#d2756e',
    500: '#b43637',
    950: '#000000',
  },
}

SCSS

$custom: #b43637;
$custom-light: #d2756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43637",
  "rgb": {
    "r": 180,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.524,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52114,
    "c": 0.16252,
    "h": 24.4
  },
  "luminance": 0.12617
}

Semantic roles & 50–950 ramp

primary

#B43637

secondary

#80C6C5

accent

#DDDC4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B43637

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

Preview Lab → · Contrast checker → · Palette generator →