#B5363F#B5363F

#B5363F is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.163 H 21.0°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B5363F
RGB	rgb(181, 54, 63)
HSL	hsl(356, 54%, 46%)
HSV	hsv(356, 70%, 71%)
CMYK	cmyk(0%, 70.2%, 65.2%, 29%)
CIE-LAB	lab(42.50, 51.44, 24.51)
CIE-LCH	lch(42.50, 56.98, 25.48°)
OKLab	oklab(52.42% 0.152 0.0583)
OKLCH	oklch(52.42% 0.163 21)
XYZ	xyz(21.2746, 12.8240, 6.0567)
Luminance	0.1282 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5363F #36B5AC

analogous

#B5367E #B5363F #B56C36

triadic

#B5363F #3FB536 #363FB5

tetradic

#B5363F #7EB536 #36B5AC #6C36B5

square

#B5363F #7EB536 #36B5AC #6C36B5

split-complementary

#B5363F #36B56C #367EB5

monochromatic

#571A1E #86282F #B5363F #CE5A63 #DC898F

Accessibility & contrast

On white

5.89

#B5363F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B5363F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5363F

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5363F	#FFFFFF	#000000	##FFFFFF
##B5363F	1.00	5.89	3.56	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59533E

Deuteranopia (green-blind)

#796E3B

Tritanopia (blue-blind)

#C7113A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b5363f;
/* rgb */ color: rgb(181, 54, 63);
/* oklch */ color: oklch(52.4% 0.163 21.0);

Tailwind

colors: {
  custom: {
    50: '#d27674',
    500: '#b5363f',
    950: '#000000',
  },
}

SCSS

$custom: #b5363f;
$custom-light: #d27674;
$custom-dark: #000000;

JSON

{
  "hex": "#b5363f",
  "rgb": {
    "r": 181,
    "g": 54,
    "b": 63
  },
  "hsl": {
    "h": 355.748,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52421,
    "c": 0.16281,
    "h": 21
  },
  "luminance": 0.12821
}

Semantic roles & 50–950 ramp

primary

#B5363F

secondary

#81C6C1

accent

#DDD34A

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B5363F

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

Preview Lab → · Contrast checker → · Palette generator →