#B4313F#B4313F

#B4313F is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.7% C 0.167 H 19.5°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#B4313F
RGB	rgb(180, 49, 63)
HSL	hsl(354, 57%, 45%)
HSV	hsv(354, 73%, 71%)
CMYK	cmyk(0%, 72.8%, 65%, 29.4%)
CIE-LAB	lab(41.63, 53.00, 23.37)
CIE-LCH	lch(41.63, 57.93, 23.80°)
OKLab	oklab(51.74% 0.1571 0.0557)
OKLCH	oklch(51.74% 0.167 19.5)
XYZ	xyz(20.8201, 12.2619, 5.9721)
Luminance	0.1226 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4313F #31B4A6

analogous

#B43180 #B4313F #B46531

triadic

#B4313F #3FB431 #313FB4

tetradic

#B4313F #80B431 #31B4A6 #6531B4

square

#B4313F #80B431 #31B4A6 #6531B4

split-complementary

#B4313F #31B465 #3180B4

monochromatic

#54171D #84242E #B4313F #D05260 #DD828C

Accessibility & contrast

On white

6.08

#B4313F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B4313F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4313F

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4313F	#FFFFFF	#000000	##FFFFFF
##B4313F	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)

#55513F

Deuteranopia (green-blind)

#766C3B

Tritanopia (blue-blind)

#C60037

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4313f;
/* rgb */ color: rgb(180, 49, 63);
/* oklch */ color: oklch(51.7% 0.167 19.5);

Tailwind

colors: {
  custom: {
    50: '#d27374',
    500: '#b4313f',
    950: '#000000',
  },
}

SCSS

$custom: #b4313f;
$custom-light: #d27374;
$custom-dark: #000000;

JSON

{
  "hex": "#b4313f",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 63
  },
  "hsl": {
    "h": 353.588,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51741,
    "c": 0.16671,
    "h": 19.5
  },
  "luminance": 0.12259
}

Semantic roles & 50–950 ramp

primary

#B4313F

secondary

#7BC6BE

accent

#E0D047

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B4313F

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

Preview Lab → · Contrast checker → · Palette generator →