#B5303C#B5303C

#B5303C is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.169 H 20.7°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#B5303C
RGB	rgb(181, 48, 60)
HSL	hsl(355, 58%, 45%)
HSV	hsv(355, 73%, 71%)
CMYK	cmyk(0%, 73.5%, 66.9%, 29%)
CIE-LAB	lab(41.64, 53.50, 25.27)
CIE-LCH	lch(41.64, 59.17, 25.28°)
OKLab	oklab(51.77% 0.158 0.0596)
OKLCH	oklch(51.77% 0.169 20.7)
XYZ	xyz(20.9309, 12.2670, 5.5397)
Luminance	0.1226 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5303C #30B5A9

analogous

#B5307F #B5303C #B56630

triadic

#B5303C #3CB530 #303CB5

tetradic

#B5303C #7FB530 #30B5A9 #6630B5

square

#B5303C #7FB530 #30B5A9 #6630B5

split-complementary

#B5303C #30B566 #307FB5

monochromatic

#54161C #85232C #B5303C #D1515D #DE828A

Accessibility & contrast

On white

6.08

#B5303C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B5303C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5303C

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5303C	#FFFFFF	#000000	##FFFFFF
##B5303C	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56503B

Deuteranopia (green-blind)

#776D38

Tritanopia (blue-blind)

#C70036

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b5303c;
/* rgb */ color: rgb(181, 48, 60);
/* oklch */ color: oklch(51.8% 0.169 20.7);

Tailwind

colors: {
  custom: {
    50: '#d37371',
    500: '#b5303c',
    950: '#000000',
  },
}

SCSS

$custom: #b5303c;
$custom-light: #d37371;
$custom-dark: #000000;

JSON

{
  "hex": "#b5303c",
  "rgb": {
    "r": 181,
    "g": 48,
    "b": 60
  },
  "hsl": {
    "h": 354.586,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51765,
    "c": 0.16883,
    "h": 20.7
  },
  "luminance": 0.12264
}

Semantic roles & 50–950 ramp

primary

#B5303C

secondary

#7AC7C0

accent

#E1D346

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B5303C

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

Preview Lab → · Contrast checker → · Palette generator →