#B03537#B03537

#B03537 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.3% C 0.159 H 23.9°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B03537
RGB	rgb(176, 53, 55)
HSL	hsl(359, 54%, 45%)
HSV	hsv(359, 70%, 69%)
CMYK	cmyk(0%, 69.9%, 68.8%, 31%)
CIE-LAB	lab(41.30, 49.75, 27.69)
CIE-LCH	lch(41.30, 56.93, 29.10°)
OKLab	oklab(51.32% 0.1456 0.0645)
OKLCH	oklch(51.32% 0.159 23.9)
XYZ	xyz(19.8693, 12.0550, 4.8943)
Luminance	0.1205 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03537 #35B0AE

analogous

#B03575 #B03537 #B07035

triadic

#B03537 #37B035 #3537B0

tetradic

#B03537 #75B035 #35B0AE #7035B0

square

#B03537 #75B035 #35B0AE #7035B0

split-complementary

#B03537 #35B070 #3575B0

monochromatic

#52191A #812728 #B03537 #CC5658 #DA8586

Accessibility & contrast

On white

6.16

#B03537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B03537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03537

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03537	#FFFFFF	#000000	##FFFFFF
##B03537	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575136

Deuteranopia (green-blind)

#766B33

Tritanopia (blue-blind)

#C10F37

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b03537;
/* rgb */ color: rgb(176, 53, 55);
/* oklch */ color: oklch(51.3% 0.159 23.9);

Tailwind

colors: {
  custom: {
    50: '#cf746e',
    500: '#b03537',
    950: '#000000',
  },
}

SCSS

$custom: #b03537;
$custom-light: #cf746e;
$custom-dark: #000000;

JSON

{
  "hex": "#b03537",
  "rgb": {
    "r": 176,
    "g": 53,
    "b": 55
  },
  "hsl": {
    "h": 359.024,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51319,
    "c": 0.15927,
    "h": 23.9
  },
  "luminance": 0.12052
}

Semantic roles & 50–950 ramp

primary

#B03537

secondary

#7DC4C3

accent

#DDDB4B

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B03537

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

Preview Lab → · Contrast checker → · Palette generator →