#B4284A#B4284A

#B4284A is a mid, vivid red. Relative luminance 0.117; OKLCH L 51.2% C 0.175 H 12.5°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#B4284A
RGB	rgb(180, 40, 74)
HSL	hsl(345, 64%, 43%)
HSV	hsv(345, 78%, 71%)
CMYK	cmyk(0%, 77.8%, 58.9%, 29.4%)
CIE-LAB	lab(40.76, 56.73, 15.37)
CIE-LCH	lch(40.76, 58.77, 15.16°)
OKLab	oklab(51.17% 0.1712 0.0381)
OKLCH	oklch(51.17% 0.175 12.5)
XYZ	xyz(20.8193, 11.7183, 7.6428)
Luminance	0.1172 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4284A #28B492

analogous

#B42890 #B4284A #B44C28

triadic

#B4284A #4AB428 #284AB4

tetradic

#B4284A #90B428 #28B492 #4C28B4

square

#B4284A #90B428 #28B492 #4C28B4

split-complementary

#B4284A #28B44C #2890B4

monochromatic

#501221 #821D35 #B4284A #D54467 #E17690

Accessibility & contrast

On white

6.28

#B4284A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#B4284A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4284A

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4284A	#FFFFFF	#000000	##FFFFFF
##B4284A	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4E4A

Deuteranopia (green-blind)

#736A46

Tritanopia (blue-blind)

#C50037

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b4284a;
/* rgb */ color: rgb(180, 40, 74);
/* oklch */ color: oklch(51.2% 0.175 12.5);

Tailwind

colors: {
  custom: {
    50: '#d16f7c',
    500: '#b4284a',
    950: '#000000',
  },
}

SCSS

$custom: #b4284a;
$custom-light: #d16f7c;
$custom-dark: #000000;

JSON

{
  "hex": "#b4284a",
  "rgb": {
    "r": 180,
    "g": 40,
    "b": 74
  },
  "hsl": {
    "h": 345.429,
    "s": 63.636,
    "l": 43.137
  },
  "oklch": {
    "l": 0.5117,
    "c": 0.17535,
    "h": 12.5
  },
  "luminance": 0.11715
}

Semantic roles & 50–950 ramp

primary

#B4284A

secondary

#70C8B3

accent

#E7BE41

background

#FDF7F7

surface

#FBEDEE

border

#D4C8C9

text

#150809

muted

#837B7B

Preview Lab

Preview with #B4284A

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

Preview Lab → · Contrast checker → · Palette generator →