#B5374B#B5374B

#B5374B is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.8% C 0.161 H 15.6°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#B5374B
RGB	rgb(181, 55, 75)
HSL	hsl(350, 53%, 46%)
HSV	hsv(350, 70%, 71%)
CMYK	cmyk(0%, 69.6%, 58.6%, 29%)
CIE-LAB	lab(42.86, 51.84, 17.60)
CIE-LCH	lch(42.86, 54.75, 18.75°)
OKLab	oklab(52.77% 0.1555 0.0434)
OKLCH	oklch(52.77% 0.161 15.6)
XYZ	xyz(21.6943, 13.0671, 8.0351)
Luminance	0.1306 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B5374B #37B5A1

analogous

#B5378A #B5374B #B56237

triadic

#B5374B #4BB537 #374BB5

tetradic

#B5374B #8AB537 #37B5A1 #6237B5

square

#B5374B #8AB537 #37B5A1 #6237B5

split-complementary

#B5374B #37B562 #378AB5

monochromatic

#571A24 #862938 #B5374B #CD5C6E #DC8B98

Accessibility & contrast

On white

5.81

#B5374B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B5374B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B5374B

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B5374B	#FFFFFF	#000000	##FFFFFF
##B5374B	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57554B

Deuteranopia (green-blind)

#786F48

Tritanopia (blue-blind)

#C6193F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b5374b;
/* rgb */ color: rgb(181, 55, 75);
/* oklch */ color: oklch(52.8% 0.161 15.6);

Tailwind

colors: {
  custom: {
    50: '#d2767d',
    500: '#b5374b',
    950: '#000000',
  },
}

SCSS

$custom: #b5374b;
$custom-light: #d2767d;
$custom-dark: #000000;

JSON

{
  "hex": "#b5374b",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 75
  },
  "hsl": {
    "h": 350.476,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52768,
    "c": 0.16147,
    "h": 15.6
  },
  "luminance": 0.13064
}

Semantic roles & 50–950 ramp

primary

#B5374B

secondary

#82C6BB

accent

#DDC64B

background

#FDF7F7

surface

#FBEDEE

border

#D4C8C9

text

#150909

muted

#837B7B

Preview Lab

Preview with #B5374B

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

Preview Lab → · Contrast checker → · Palette generator →