#B4153A#B4153A

#B4153A is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.6% C 0.188 H 16.7°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#B4153A
RGB	rgb(180, 21, 58)
HSL	hsl(346, 79%, 39%)
HSV	hsv(346, 88%, 71%)
CMYK	cmyk(0%, 88.3%, 67.8%, 29.4%)
CIE-LAB	lab(38.81, 60.44, 22.91)
CIE-LCH	lch(38.81, 64.63, 20.76°)
OKLab	oklab(49.63% 0.1799 0.0541)
OKLCH	oklch(49.63% 0.188 16.7)
XYZ	xyz(19.8566, 10.5483, 4.9927)
Luminance	0.1055 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4153A #15B48F

analogous

#B41589 #B4153A #B44015

triadic

#B4153A #3AB415 #153AB4

tetradic

#B4153A #89B415 #15B48F #4015B4

square

#B4153A #89B415 #15B48F #4015B4

split-complementary

#B4153A #15B440 #1589B4

monochromatic

#460817 #7D0F28 #B4153A #E5214F #EC587A

Accessibility & contrast

On white

6.75

#B4153A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#B4153A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4153A

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4153A	#FFFFFF	#000000	##FFFFFF
##B4153A	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473A

Deuteranopia (green-blind)

#716735

Tritanopia (blue-blind)

#C60027

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4153a;
/* rgb */ color: rgb(180, 21, 58);
/* oklch */ color: oklch(49.6% 0.188 16.7);

Tailwind

colors: {
  custom: {
    50: '#d3696f',
    500: '#b4153a',
    950: '#000000',
  },
}

SCSS

$custom: #b4153a;
$custom-light: #d3696f;
$custom-dark: #000000;

JSON

{
  "hex": "#b4153a",
  "rgb": {
    "r": 180,
    "g": 21,
    "b": 58
  },
  "hsl": {
    "h": 346.038,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.49625,
    "c": 0.18788,
    "h": 16.7
  },
  "luminance": 0.10545
}

Semantic roles & 50–950 ramp

primary

#B4153A

secondary

#56CFB3

accent

#F6C832

background

#FEF6F6

surface

#FCECEC

border

#D5C7C7

text

#160707

muted

#847A7A

Preview Lab

Preview with #B4153A

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

Preview Lab → · Contrast checker → · Palette generator →