#B4274A#B4274A

#B4274A is a mid, vivid red. Relative luminance 0.116; OKLCH L 51.1% C 0.176 H 12.4°. Best body text is #FFFFFF at 6.31:1 contrast (WCAG AA passes).

Color values

HEX	#B4274A
RGB	rgb(180, 39, 74)
HSL	hsl(345, 64%, 43%)
HSV	hsv(345, 78%, 71%)
CMYK	cmyk(0%, 78.3%, 58.9%, 29.4%)
CIE-LAB	lab(40.66, 57.03, 15.22)
CIE-LCH	lch(40.66, 59.03, 14.95°)
OKLab	oklab(51.09% 0.1721 0.0378)
OKLCH	oklch(51.09% 0.176 12.4)
XYZ	xyz(20.7860, 11.6518, 7.6318)
Luminance	0.1165 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4274A #27B491

analogous

#B42791 #B4274A #B44A27

triadic

#B4274A #4AB427 #274AB4

tetradic

#B4274A #91B427 #27B491 #4A27B4

square

#B4274A #91B427 #27B491 #4A27B4

split-complementary

#B4274A #27B44A #2791B4

monochromatic

#4F1121 #821C35 #B4274A #D64267 #E1748F

Accessibility & contrast

On white

6.31

#B4274A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#B4274A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4274A

6.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4274A	#FFFFFF	#000000	##FFFFFF
##B4274A	1.00	6.31	3.33	6.31
#FFFFFF	6.31	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4D4A

Deuteranopia (green-blind)

#726A46

Tritanopia (blue-blind)

#C50036

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b4274a;
/* rgb */ color: rgb(180, 39, 74);
/* oklch */ color: oklch(51.1% 0.176 12.4);

Tailwind

colors: {
  custom: {
    50: '#d16f7c',
    500: '#b4274a',
    950: '#000000',
  },
}

SCSS

$custom: #b4274a;
$custom-light: #d16f7c;
$custom-dark: #000000;

JSON

{
  "hex": "#b4274a",
  "rgb": {
    "r": 180,
    "g": 39,
    "b": 74
  },
  "hsl": {
    "h": 345.106,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.5109,
    "c": 0.17623,
    "h": 12.4
  },
  "luminance": 0.11649
}

Semantic roles & 50–950 ramp

primary

#B4274A

secondary

#6FC8B2

accent

#E7BE40

background

#FDF7F7

surface

#FBEDEE

border

#D4C8C9

text

#150809

muted

#837B7B

Preview Lab

Preview with #B4274A

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

Preview Lab → · Contrast checker → · Palette generator →