#B43738#B43738

#B43738 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.2% C 0.161 H 24.3°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B43738
RGB	rgb(180, 55, 56)
HSL	hsl(360, 53%, 46%)
HSV	hsv(360, 69%, 71%)
CMYK	cmyk(0%, 69.4%, 68.9%, 29.4%)
CIE-LAB	lab(42.34, 50.33, 28.52)
CIE-LCH	lch(42.34, 57.85, 29.54°)
OKLab	oklab(52.24% 0.1472 0.0663)
OKLCH	oklch(52.24% 0.161 24.3)
XYZ	xyz(20.9046, 12.7242, 5.0959)
Luminance	0.1272 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43738 #37B4B3

analogous

#B43776 #B43738 #B47437

triadic

#B43738 #38B437 #3738B4

tetradic

#B43738 #76B437 #37B4B3 #7437B4

square

#B43738 #76B437 #37B4B3 #7437B4

split-complementary

#B43738 #37B474 #3776B4

monochromatic

#561A1B #852929 #B43738 #CD5B5C #DB8A8B

Accessibility & contrast

On white

5.93

#B43738 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B43738 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43738

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43738	#FFFFFF	#000000	##FFFFFF
##B43738	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5337

Deuteranopia (green-blind)

#796E34

Tritanopia (blue-blind)

#C61139

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b43738;
/* rgb */ color: rgb(180, 55, 56);
/* oklch */ color: oklch(52.2% 0.161 24.3);

Tailwind

colors: {
  custom: {
    50: '#d2766e',
    500: '#b43738',
    950: '#000000',
  },
}

SCSS

$custom: #b43738;
$custom-light: #d2766e;
$custom-dark: #000000;

JSON

{
  "hex": "#b43738",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 56
  },
  "hsl": {
    "h": 359.52,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52238,
    "c": 0.16142,
    "h": 24.3
  },
  "luminance": 0.12721
}

Semantic roles & 50–950 ramp

primary

#B43738

secondary

#81C6C5

accent

#DDDB4B

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B43738

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

Preview Lab → · Contrast checker → · Palette generator →