#B1373A#B1373A

#B1373A is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.158 H 23.3°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B1373A
RGB	rgb(177, 55, 58)
HSL	hsl(359, 53%, 45%)
HSV	hsv(359, 69%, 69%)
CMYK	cmyk(0%, 68.9%, 67.2%, 30.6%)
CIE-LAB	lab(41.83, 49.45, 26.56)
CIE-LCH	lch(41.83, 56.12, 28.24°)
OKLab	oklab(51.76% 0.1452 0.0624)
OKLCH	oklch(51.76% 0.158 23.3)
XYZ	xyz(20.2635, 12.3879, 5.3263)
Luminance	0.1239 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1373A #37B1AE

analogous

#B13777 #B1373A #B17137

triadic

#B1373A #3AB137 #373AB1

tetradic

#B1373A #77B137 #37B1AE #7137B1

square

#B1373A #77B137 #37B1AE #7137B1

split-complementary

#B1373A #37B171 #3777B1

monochromatic

#541A1B #82282B #B1373A #CC5A5C #DA888A

Accessibility & contrast

On white

6.04

#B1373A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B1373A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1373A

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1373A	#FFFFFF	#000000	##FFFFFF
##B1373A	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585239

Deuteranopia (green-blind)

#776C36

Tritanopia (blue-blind)

#C21539

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b1373a;
/* rgb */ color: rgb(177, 55, 58);
/* oklch */ color: oklch(51.8% 0.158 23.3);

Tailwind

colors: {
  custom: {
    50: '#d07570',
    500: '#b1373a',
    950: '#000000',
  },
}

SCSS

$custom: #b1373a;
$custom-light: #d07570;
$custom-dark: #000000;

JSON

{
  "hex": "#b1373a",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 58
  },
  "hsl": {
    "h": 358.525,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.51759,
    "c": 0.158,
    "h": 23.3
  },
  "luminance": 0.12385
}

Semantic roles & 50–950 ramp

primary

#B1373A

secondary

#80C4C2

accent

#DCD84C

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B1373A

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

Preview Lab → · Contrast checker → · Palette generator →