#B4172F#B4172F

#B4172F is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.5% C 0.187 H 21.1°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#B4172F
RGB	rgb(180, 23, 47)
HSL	hsl(351, 77%, 40%)
HSV	hsv(351, 87%, 71%)
CMYK	cmyk(0%, 87.2%, 73.9%, 29.4%)
CIE-LAB	lab(38.77, 59.55, 29.73)
CIE-LCH	lch(38.77, 66.56, 26.53°)
OKLab	oklab(49.54% 0.1746 0.0673)
OKLCH	oklch(49.54% 0.187 21.1)
XYZ	xyz(19.6443, 10.5245, 3.6859)
Luminance	0.1052 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4172F #17B49C

analogous

#B4177E #B4172F #B44E17

triadic

#B4172F #2FB417 #172FB4

tetradic

#B4172F #7EB417 #17B49C #4E17B4

square

#B4172F #7EB417 #17B49C #4E17B4

split-complementary

#B4172F #17B44E #177EB4

monochromatic

#470913 #7E1021 #B4172F #E32542 #EA5B71

Accessibility & contrast

On white

6.77

#B4172F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#B4172F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4172F

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4172F	#FFFFFF	#000000	##FFFFFF
##B4172F	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C462E

Deuteranopia (green-blind)

#726729

Tritanopia (blue-blind)

#C60023

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4172f;
/* rgb */ color: rgb(180, 23, 47);
/* oklch */ color: oklch(49.5% 0.187 21.1);

Tailwind

colors: {
  custom: {
    50: '#d46967',
    500: '#b4172f',
    950: '#000000',
  },
}

SCSS

$custom: #b4172f;
$custom-light: #d46967;
$custom-dark: #000000;

JSON

{
  "hex": "#b4172f",
  "rgb": {
    "r": 180,
    "g": 23,
    "b": 47
  },
  "hsl": {
    "h": 350.828,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49539,
    "c": 0.18708,
    "h": 21.1
  },
  "luminance": 0.10521
}

Semantic roles & 50–950 ramp

primary

#B4172F

secondary

#59CEBC

accent

#F4D734

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160706

muted

#847A7A

Preview Lab

Preview with #B4172F

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

Preview Lab → · Contrast checker → · Palette generator →