#B43539#B43539

#B43539 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.163 H 23.2°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B43539
RGB	rgb(180, 53, 57)
HSL	hsl(358, 55%, 46%)
HSV	hsv(358, 71%, 71%)
CMYK	cmyk(0%, 70.6%, 68.3%, 29.4%)
CIE-LAB	lab(42.07, 51.16, 27.59)
CIE-LCH	lch(42.07, 58.13, 28.34°)
OKLab	oklab(52.04% 0.15 0.0644)
OKLCH	oklch(52.04% 0.163 23.2)
XYZ	xyz(20.8362, 12.5480, 5.1949)
Luminance	0.1255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B43539 #35B4B0

analogous

#B43578 #B43539 #B47035

triadic

#B43539 #39B435 #3539B4

tetradic

#B43539 #78B435 #35B4B0 #7035B4

square

#B43539 #78B435 #35B4B0 #7035B4

split-complementary

#B43539 #35B470 #3578B4

monochromatic

#55191B #85272A #B43539 #CE585C #DC888A

Accessibility & contrast

On white

5.98

#B43539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B43539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B43539

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B43539	#FFFFFF	#000000	##FFFFFF
##B43539	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585238

Deuteranopia (green-blind)

#786D35

Tritanopia (blue-blind)

#C60B38

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b43539;
/* rgb */ color: rgb(180, 53, 57);
/* oklch */ color: oklch(52.0% 0.163 23.2);

Tailwind

colors: {
  custom: {
    50: '#d2756f',
    500: '#b43539',
    950: '#000000',
  },
}

SCSS

$custom: #b43539;
$custom-light: #d2756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b43539",
  "rgb": {
    "r": 180,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.11,
    "s": 54.506,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52041,
    "c": 0.16327,
    "h": 23.2
  },
  "luminance": 0.12545
}

Semantic roles & 50–950 ramp

primary

#B43539

secondary

#7FC6C4

accent

#DED94A

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B43539

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

Preview Lab → · Contrast checker → · Palette generator →