#B4304B#B4304B

#B4304B is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.9% C 0.168 H 13.7°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B4304B
RGB	rgb(180, 48, 75)
HSL	hsl(348, 58%, 45%)
HSV	hsv(348, 73%, 71%)
CMYK	cmyk(0%, 73.3%, 58.3%, 29.4%)
CIE-LAB	lab(41.73, 54.15, 16.05)
CIE-LCH	lch(41.73, 56.48, 16.51°)
OKLab	oklab(51.89% 0.163 0.0398)
OKLCH	oklch(51.89% 0.168 13.7)
XYZ	xyz(21.1514, 12.3282, 7.9211)
Luminance	0.1232 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4304B #30B499

analogous

#B4308D #B4304B #B45730

triadic

#B4304B #4BB430 #304BB4

tetradic

#B4304B #8DB430 #30B499 #5730B4

square

#B4304B #8DB430 #30B499 #5730B4

split-complementary

#B4304B #30B457 #308DB4

monochromatic

#531623 #842337 #B4304B #D1516B #DD8194

Accessibility & contrast

On white

6.06

#B4304B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B4304B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4304B

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4304B	#FFFFFF	#000000	##FFFFFF
##B4304B	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#53514B

Deuteranopia (green-blind)

#756C48

Tritanopia (blue-blind)

#C5073B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b4304b;
/* rgb */ color: rgb(180, 48, 75);
/* oklch */ color: oklch(51.9% 0.168 13.7);

Tailwind

colors: {
  custom: {
    50: '#d1737d',
    500: '#b4304b',
    950: '#000000',
  },
}

SCSS

$custom: #b4304b;
$custom-light: #d1737d;
$custom-dark: #000000;

JSON

{
  "hex": "#b4304b",
  "rgb": {
    "r": 180,
    "g": 48,
    "b": 75
  },
  "hsl": {
    "h": 347.727,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51894,
    "c": 0.16781,
    "h": 13.7
  },
  "luminance": 0.12325
}

Semantic roles & 50–950 ramp

primary

#B4304B

secondary

#79C6B7

accent

#E1C247

background

#FDF7F7

surface

#FBEDEE

border

#D4C8C9

text

#150909

muted

#837B7B

Preview Lab

Preview with #B4304B

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

Preview Lab → · Contrast checker → · Palette generator →