#B03037#B03037

#B03037 is a mid, vivid red. Relative luminance 0.116; OKLCH L 50.8% C 0.164 H 22.4°. Best body text is #FFFFFF at 6.32:1 contrast (WCAG AA passes).

Color values

HEX	#B03037
RGB	rgb(176, 48, 55)
HSL	hsl(357, 57%, 44%)
HSV	hsv(357, 73%, 69%)
CMYK	cmyk(0%, 72.7%, 68.8%, 31%)
CIE-LAB	lab(40.61, 51.66, 26.84)
CIE-LCH	lch(40.61, 58.21, 27.46°)
OKLab	oklab(50.8% 0.1517 0.0626)
OKLCH	oklch(50.8% 0.164 22.4)
XYZ	xyz(19.6532, 11.6228, 4.8223)
Luminance	0.1162 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03037 #30B0A9

analogous

#B03077 #B03037 #B06930

triadic

#B03037 #37B030 #3037B0

tetradic

#B03037 #77B030 #30B0A9 #6930B0

square

#B03037 #77B030 #30B0A9 #6930B0

split-complementary

#B03037 #30B069 #3077B0

monochromatic

#501619 #802328 #B03037 #CF4E55 #DC7E84

Accessibility & contrast

On white

6.32

#B03037 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#B03037 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03037

6.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03037	#FFFFFF	#000000	##FFFFFF
##B03037	1.00	6.32	3.32	6.32
#FFFFFF	6.32	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E36

Deuteranopia (green-blind)

#746A33

Tritanopia (blue-blind)

#C10034

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b03037;
/* rgb */ color: rgb(176, 48, 55);
/* oklch */ color: oklch(50.8% 0.164 22.4);

Tailwind

colors: {
  custom: {
    50: '#cf726e',
    500: '#b03037',
    950: '#000000',
  },
}

SCSS

$custom: #b03037;
$custom-light: #cf726e;
$custom-dark: #000000;

JSON

{
  "hex": "#b03037",
  "rgb": {
    "r": 176,
    "g": 48,
    "b": 55
  },
  "hsl": {
    "h": 356.719,
    "s": 57.143,
    "l": 43.922
  },
  "oklch": {
    "l": 0.50802,
    "c": 0.1641,
    "h": 22.4
  },
  "luminance": 0.1162
}

Semantic roles & 50–950 ramp

primary

#B03037

secondary

#77C5C0

accent

#E0D847

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #B03037

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

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