#B5313E#B5313E

#B5313E is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.168 H 20.1°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B5313E
RGB	rgb(181, 49, 62)
HSL	hsl(354, 57%, 45%)
HSV	hsv(354, 73%, 71%)
CMYK	cmyk(0%, 72.9%, 65.7%, 29%)
CIE-LAB	lab(41.80, 53.26, 24.24)
CIE-LCH	lch(41.80, 58.52, 24.48°)
OKLab	oklab(51.9% 0.1576 0.0576)
OKLCH	oklch(51.9% 0.168 20.1)
XYZ	xyz(21.0261, 12.3713, 5.8372)
Luminance	0.1237 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5313E #31B5A8

analogous

#B53180 #B5313E #B56631

triadic

#B5313E #3EB531 #313EB5

tetradic

#B5313E #80B531 #31B5A8 #6631B5

square

#B5313E #80B531 #31B5A8 #6631B5

split-complementary

#B5313E #31B566 #3180B5

monochromatic

#55171D #85242E #B5313E #D0535F #DD838C

Accessibility & contrast

On white

6.05

#B5313E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B5313E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5313E

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5313E	#FFFFFF	#000000	##FFFFFF
##B5313E	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56513D

Deuteranopia (green-blind)

#776D3A

Tritanopia (blue-blind)

#C70037

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b5313e;
/* rgb */ color: rgb(181, 49, 62);
/* oklch */ color: oklch(51.9% 0.168 20.1);

Tailwind

colors: {
  custom: {
    50: '#d37373',
    500: '#b5313e',
    950: '#000000',
  },
}

SCSS

$custom: #b5313e;
$custom-light: #d37373;
$custom-dark: #000000;

JSON

{
  "hex": "#b5313e",
  "rgb": {
    "r": 181,
    "g": 49,
    "b": 62
  },
  "hsl": {
    "h": 354.091,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51897,
    "c": 0.16778,
    "h": 20.1
  },
  "luminance": 0.12368
}

Semantic roles & 50–950 ramp

primary

#B5313E

secondary

#7BC7BF

accent

#E1D247

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B5313E

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

Preview Lab → · Contrast checker → · Palette generator →