#B4173E#B4173E

#B4173E is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.8% C 0.187 H 15.3°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#B4173E
RGB	rgb(180, 23, 62)
HSL	hsl(345, 77%, 40%)
HSV	hsv(345, 87%, 71%)
CMYK	cmyk(0%, 87.2%, 65.6%, 29.4%)
CIE-LAB	lab(39.01, 60.27, 20.64)
CIE-LCH	lch(39.01, 63.71, 18.91°)
OKLab	oklab(49.8% 0.1803 0.0494)
OKLCH	oklch(49.8% 0.187 15.3)
XYZ	xyz(20.0005, 10.6671, 5.5623)
Luminance	0.1066 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4173E #17B48D

analogous

#B4178C #B4173E #B43F17

triadic

#B4173E #3EB417 #173EB4

tetradic

#B4173E #8CB417 #17B48D #3F17B4

square

#B4173E #8CB417 #17B48D #3F17B4

split-complementary

#B4173E #17B43F #178CB4

monochromatic

#470919 #7E102B #B4173E #E32554 #EA5B7F

Accessibility & contrast

On white

6.70

#B4173E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#B4173E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4173E

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4173E	#FFFFFF	#000000	##FFFFFF
##B4173E	1.00	6.70	3.13	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A473E

Deuteranopia (green-blind)

#71673A

Tritanopia (blue-blind)

#C6002A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b4173e;
/* rgb */ color: rgb(180, 23, 62);
/* oklch */ color: oklch(49.8% 0.187 15.3);

Tailwind

colors: {
  custom: {
    50: '#d36a72',
    500: '#b4173e',
    950: '#000000',
  },
}

SCSS

$custom: #b4173e;
$custom-light: #d36a72;
$custom-dark: #000000;

JSON

{
  "hex": "#b4173e",
  "rgb": {
    "r": 180,
    "g": 23,
    "b": 62
  },
  "hsl": {
    "h": 345.096,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49799,
    "c": 0.18692,
    "h": 15.3
  },
  "luminance": 0.10664
}

Semantic roles & 50–950 ramp

primary

#B4173E

secondary

#59CEB1

accent

#F4C434

background

#FEF6F6

surface

#FCECEC

border

#D5C7C7

text

#160708

muted

#847A7B

Preview Lab

Preview with #B4173E

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

Preview Lab → · Contrast checker → · Palette generator →