#A0171C#A0171C

#A0171C is a mid, vivid red. Relative luminance 0.082; OKLCH L 45.5% C 0.170 H 26.1°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#A0171C
RGB	rgb(160, 23, 28)
HSL	hsl(358, 75%, 36%)
HSV	hsv(358, 86%, 63%)
CMYK	cmyk(0%, 85.6%, 82.5%, 37.3%)
CIE-LAB	lab(34.34, 53.31, 35.05)
CIE-LCH	lch(34.34, 63.80, 33.33°)
OKLab	oklab(45.46% 0.153 0.0749)
OKLCH	oklch(45.46% 0.17 26.1)
XYZ	xyz(15.0151, 8.1727, 1.8853)
Luminance	0.0817 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0171C #17A09B

analogous

#A01760 #A0171C #A05617

triadic

#A0171C #1CA017 #171CA0

tetradic

#A0171C #60A017 #17A09B #5617A0

square

#A0171C #60A017 #17A09B #5617A0

split-complementary

#A0171C #17A056 #1760A0

monochromatic

#350809 #6A0F13 #A0171C #D61F25 #E54C52

Accessibility & contrast

On white

7.97

#A0171C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#A0171C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0171C

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0171C	#FFFFFF	#000000	##FFFFFF
##A0171C	1.00	7.97	2.63	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453E1A

Deuteranopia (green-blind)

#665B15

Tritanopia (blue-blind)

#B1001B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a0171c;
/* rgb */ color: rgb(160, 23, 28);
/* oklch */ color: oklch(45.5% 0.170 26.1);

Tailwind

colors: {
  custom: {
    50: '#c66559',
    500: '#a0171c',
    950: '#000000',
  },
}

SCSS

$custom: #a0171c;
$custom-light: #c66559;
$custom-dark: #000000;

JSON

{
  "hex": "#a0171c",
  "rgb": {
    "r": 160,
    "g": 23,
    "b": 28
  },
  "hsl": {
    "h": 357.81,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45463,
    "c": 0.17039,
    "h": 26.1
  },
  "luminance": 0.0817
}

Semantic roles & 50–950 ramp

primary

#A0171C

secondary

#4CC7C3

accent

#F1EB36

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150603

muted

#837A78

Preview Lab

Preview with #A0171C

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

Preview Lab → · Contrast checker → · Palette generator →