#A0171A#A0171A

#A0171A is a mid, vivid red. Relative luminance 0.082; OKLCH L 45.4% C 0.171 H 26.7°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#A0171A
RGB	rgb(160, 23, 26)
HSL	hsl(359, 75%, 36%)
HSV	hsv(359, 86%, 63%)
CMYK	cmyk(0%, 85.6%, 83.8%, 37.3%)
CIE-LAB	lab(34.32, 53.25, 36.16)
CIE-LCH	lch(34.32, 64.37, 34.18°)
OKLab	oklab(45.44% 0.1525 0.0766)
OKLCH	oklch(45.44% 0.171 26.7)
XYZ	xyz(14.9920, 8.1635, 1.7634)
Luminance	0.0816 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0171A #17A09D

analogous

#A0175E #A0171A #A05817

triadic

#A0171A #1AA017 #171AA0

tetradic

#A0171A #5EA017 #17A09D #5817A0

square

#A0171A #5EA017 #17A09D #5817A0

split-complementary

#A0171A #17A058 #175EA0

monochromatic

#350809 #6A0F11 #A0171A #D61F23 #E54C4F

Accessibility & contrast

On white

7.98

#A0171A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#A0171A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0171A

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0171A	#FFFFFF	#000000	##FFFFFF
##A0171A	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463E18

Deuteranopia (green-blind)

#665B12

Tritanopia (blue-blind)

#B1001B

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a0171a;
/* rgb */ color: rgb(160, 23, 26);
/* oklch */ color: oklch(45.4% 0.171 26.7);

Tailwind

colors: {
  custom: {
    50: '#c66558',
    500: '#a0171a',
    950: '#000000',
  },
}

SCSS

$custom: #a0171a;
$custom-light: #c66558;
$custom-dark: #000000;

JSON

{
  "hex": "#a0171a",
  "rgb": {
    "r": 160,
    "g": 23,
    "b": 26
  },
  "hsl": {
    "h": 358.686,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45443,
    "c": 0.1706,
    "h": 26.7
  },
  "luminance": 0.08161
}

Semantic roles & 50–950 ramp

primary

#A0171A

secondary

#4CC7C4

accent

#F1ED36

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150603

muted

#837A78

Preview Lab

Preview with #A0171A

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

Preview Lab → · Contrast checker → · Palette generator →