#B4313D#B4313D

#B4313D is a mid, vivid red. Relative luminance 0.122; OKLCH L 51.7% C 0.167 H 20.4°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).

Color values

HEX	#B4313D
RGB	rgb(180, 49, 61)
HSL	hsl(355, 57%, 45%)
HSV	hsv(355, 73%, 71%)
CMYK	cmyk(0%, 72.8%, 66.1%, 29.4%)
CIE-LAB	lab(41.59, 52.89, 24.56)
CIE-LCH	lch(41.59, 58.31, 24.91°)
OKLab	oklab(51.7% 0.1563 0.0582)
OKLCH	oklch(51.7% 0.167 20.4)
XYZ	xyz(20.7652, 12.2399, 5.6831)
Luminance	0.1224 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4313D #31B4A8

analogous

#B4317E #B4313D #B46731

triadic

#B4313D #3DB431 #313DB4

tetradic

#B4313D #7EB431 #31B4A8 #6731B4

square

#B4313D #7EB431 #31B4A8 #6731B4

split-complementary

#B4313D #31B467 #317EB4

monochromatic

#54171C #84242D #B4313D #D0525E #DD828B

Accessibility & contrast

On white

6.09

#B4313D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#B4313D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4313D

6.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4313D	#FFFFFF	#000000	##FFFFFF
##B4313D	1.00	6.09	3.45	6.09
#FFFFFF	6.09	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56503C

Deuteranopia (green-blind)

#776C39

Tritanopia (blue-blind)

#C60037

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4313d;
/* rgb */ color: rgb(180, 49, 61);
/* oklch */ color: oklch(51.7% 0.167 20.4);

Tailwind

colors: {
  custom: {
    50: '#d27372',
    500: '#b4313d',
    950: '#000000',
  },
}

SCSS

$custom: #b4313d;
$custom-light: #d27372;
$custom-dark: #000000;

JSON

{
  "hex": "#b4313d",
  "rgb": {
    "r": 180,
    "g": 49,
    "b": 61
  },
  "hsl": {
    "h": 354.504,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51704,
    "c": 0.16681,
    "h": 20.4
  },
  "luminance": 0.12237
}

Semantic roles & 50–950 ramp

primary

#B4313D

secondary

#7BC6BF

accent

#E0D247

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B4313D

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

Preview Lab → · Contrast checker → · Palette generator →