#B5303E#B5303E

#B5303E is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.169 H 19.8°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B5303E
RGB	rgb(181, 48, 62)
HSL	hsl(354, 58%, 45%)
HSV	hsv(354, 73%, 71%)
CMYK	cmyk(0%, 73.5%, 65.7%, 29%)
CIE-LAB	lab(41.67, 53.62, 24.08)
CIE-LCH	lch(41.67, 58.77, 24.19°)
OKLab	oklab(51.8% 0.1587 0.0572)
OKLCH	oklch(51.8% 0.169 19.8)
XYZ	xyz(20.9847, 12.2886, 5.8235)
Luminance	0.1229 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5303E #30B5A7

analogous

#B53081 #B5303E #B56430

triadic

#B5303E #3EB530 #303EB5

tetradic

#B5303E #81B530 #30B5A7 #6430B5

square

#B5303E #81B530 #30B5A7 #6430B5

split-complementary

#B5303E #30B564 #3081B5

monochromatic

#54161D #85232D #B5303E #D1515F #DE828B

Accessibility & contrast

On white

6.07

#B5303E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B5303E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5303E

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5303E	#FFFFFF	#000000	##FFFFFF
##B5303E	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55503E

Deuteranopia (green-blind)

#776D3A

Tritanopia (blue-blind)

#C70036

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b5303e;
/* rgb */ color: rgb(181, 48, 62);
/* oklch */ color: oklch(51.8% 0.169 19.8);

Tailwind

colors: {
  custom: {
    50: '#d37373',
    500: '#b5303e',
    950: '#000000',
  },
}

SCSS

$custom: #b5303e;
$custom-light: #d37373;
$custom-dark: #000000;

JSON

{
  "hex": "#b5303e",
  "rgb": {
    "r": 181,
    "g": 48,
    "b": 62
  },
  "hsl": {
    "h": 353.684,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51801,
    "c": 0.16873,
    "h": 19.8
  },
  "luminance": 0.12285
}

Semantic roles & 50–950 ramp

primary

#B5303E

secondary

#7AC7BF

accent

#E1D146

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B5303E

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

Preview Lab → · Contrast checker → · Palette generator →