#A0171D#A0171D

#A0171D is a mid, vivid red. Relative luminance 0.082; OKLCH L 45.5% C 0.170 H 25.8°. Best body text is #FFFFFF at 7.97:1 contrast (WCAG AA passes).

Color values

HEX	#A0171D
RGB	rgb(160, 23, 29)
HSL	hsl(357, 75%, 36%)
HSV	hsv(357, 86%, 63%)
CMYK	cmyk(0%, 85.6%, 81.9%, 37.3%)
CIE-LAB	lab(34.35, 53.34, 34.49)
CIE-LCH	lch(34.35, 63.52, 32.89°)
OKLab	oklab(45.47% 0.1533 0.0741)
OKLCH	oklch(45.47% 0.17 25.8)
XYZ	xyz(15.0273, 8.1776, 1.9494)
Luminance	0.0818 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0171D #17A09A

analogous

#A01761 #A0171D #A05517

triadic

#A0171D #1DA017 #171DA0

tetradic

#A0171D #61A017 #17A09A #5517A0

square

#A0171D #61A017 #17A09A #5517A0

split-complementary

#A0171D #17A055 #1761A0

monochromatic

#35080A #6A0F13 #A0171D #D61F27 #E54C53

Accessibility & contrast

On white

7.97

#A0171D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#A0171D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0171D

7.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0171D	#FFFFFF	#000000	##FFFFFF
##A0171D	1.00	7.97	2.64	7.97
#FFFFFF	7.97	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453E1B

Deuteranopia (green-blind)

#665B16

Tritanopia (blue-blind)

#B1001C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a0171d;
/* rgb */ color: rgb(160, 23, 29);
/* oklch */ color: oklch(45.5% 0.170 25.8);

Tailwind

colors: {
  custom: {
    50: '#c6655a',
    500: '#a0171d',
    950: '#000000',
  },
}

SCSS

$custom: #a0171d;
$custom-light: #c6655a;
$custom-dark: #000000;

JSON

{
  "hex": "#a0171d",
  "rgb": {
    "r": 160,
    "g": 23,
    "b": 29
  },
  "hsl": {
    "h": 357.372,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45473,
    "c": 0.1703,
    "h": 25.8
  },
  "luminance": 0.08175
}

Semantic roles & 50–950 ramp

primary

#A0171D

secondary

#4CC7C2

accent

#F1E936

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150603

muted

#837A78

Preview Lab

Preview with #A0171D

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

Preview Lab → · Contrast checker → · Palette generator →