#B4173C#B4173C

#B4173C is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.8% C 0.187 H 16.1°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#B4173C
RGB	rgb(180, 23, 60)
HSL	hsl(346, 77%, 40%)
HSV	hsv(346, 87%, 71%)
CMYK	cmyk(0%, 87.2%, 66.7%, 29.4%)
CIE-LAB	lab(38.98, 60.16, 21.86)
CIE-LCH	lch(38.98, 64.01, 19.97°)
OKLab	oklab(49.76% 0.1795 0.052)
OKLCH	oklch(49.76% 0.187 16.1)
XYZ	xyz(19.9467, 10.6455, 5.2786)
Luminance	0.1064 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4173C #17B48F

analogous

#B4178A #B4173C #B44117

triadic

#B4173C #3CB417 #173CB4

tetradic

#B4173C #8AB417 #17B48F #4117B4

square

#B4173C #8AB417 #17B48F #4117B4

split-complementary

#B4173C #17B441 #178AB4

monochromatic

#470918 #7E102A #B4173C #E32552 #EA5B7D

Accessibility & contrast

On white

6.71

#B4173C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#B4173C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4173C

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4173C	#FFFFFF	#000000	##FFFFFF
##B4173C	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473C

Deuteranopia (green-blind)

#716737

Tritanopia (blue-blind)

#C60029

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b4173c;
/* rgb */ color: rgb(180, 23, 60);
/* oklch */ color: oklch(49.8% 0.187 16.1);

Tailwind

colors: {
  custom: {
    50: '#d36971',
    500: '#b4173c',
    950: '#000000',
  },
}

SCSS

$custom: #b4173c;
$custom-light: #d36971;
$custom-dark: #000000;

JSON

{
  "hex": "#b4173c",
  "rgb": {
    "r": 180,
    "g": 23,
    "b": 60
  },
  "hsl": {
    "h": 345.86,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.4976,
    "c": 0.18685,
    "h": 16.1
  },
  "luminance": 0.10642
}

Semantic roles & 50–950 ramp

primary

#B4173C

secondary

#59CEB2

accent

#F4C734

background

#FEF6F6

surface

#FCECEC

border

#D5C7C7

text

#160707

muted

#847A7A

Preview Lab

Preview with #B4173C

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

Preview Lab → · Contrast checker → · Palette generator →