#B4374B#B4374B

#B4374B is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.6% C 0.160 H 15.5°. Best body text is #FFFFFF at 5.85:1 contrast (WCAG AA passes).

Color values

HEX	#B4374B
RGB	rgb(180, 55, 75)
HSL	hsl(350, 53%, 46%)
HSV	hsv(350, 69%, 71%)
CMYK	cmyk(0%, 69.4%, 58.3%, 29.4%)
CIE-LAB	lab(42.68, 51.52, 17.33)
CIE-LCH	lch(42.68, 54.36, 18.59°)
OKLab	oklab(52.6% 0.1546 0.0428)
OKLCH	oklch(52.6% 0.16 15.5)
XYZ	xyz(21.4606, 12.9466, 8.0241)
Luminance	0.1294 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4374B #37B4A0

analogous

#B43789 #B4374B #B46137

triadic

#B4374B #4BB437 #374BB4

tetradic

#B4374B #89B437 #37B4A0 #6137B4

square

#B4374B #89B437 #37B4A0 #6137B4

split-complementary

#B4374B #37B461 #3789B4

monochromatic

#561A24 #852937 #B4374B #CD5B6D #DB8A97

Accessibility & contrast

On white

5.85

#B4374B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.59

#B4374B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4374B

5.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4374B	#FFFFFF	#000000	##FFFFFF
##B4374B	1.00	5.85	3.59	5.85
#FFFFFF	5.85	1.00	21.00	1.00
#000000	3.59	21.00	1.00	21.00
##FFFFFF	5.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57544B

Deuteranopia (green-blind)

#776E48

Tritanopia (blue-blind)

#C51A3F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b4374b;
/* rgb */ color: rgb(180, 55, 75);
/* oklch */ color: oklch(52.6% 0.160 15.5);

Tailwind

colors: {
  custom: {
    50: '#d1767d',
    500: '#b4374b',
    950: '#000000',
  },
}

SCSS

$custom: #b4374b;
$custom-light: #d1767d;
$custom-dark: #000000;

JSON

{
  "hex": "#b4374b",
  "rgb": {
    "r": 180,
    "g": 55,
    "b": 75
  },
  "hsl": {
    "h": 350.4,
    "s": 53.191,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52599,
    "c": 0.16044,
    "h": 15.5
  },
  "luminance": 0.12944
}

Semantic roles & 50–950 ramp

primary

#B4374B

secondary

#81C6BB

accent

#DDC54B

background

#FDF7F7

surface

#FBEDEE

border

#D4C8C9

text

#150909

muted

#837B7B

Preview Lab

Preview with #B4374B

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

Preview Lab → · Contrast checker → · Palette generator →