#A0171F#A0171F

#A0171F is a mid, vivid red. Relative luminance 0.082; OKLCH L 45.5% C 0.170 H 25.1°. Best body text is #FFFFFF at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#A0171F
RGB	rgb(160, 23, 31)
HSL	hsl(356, 75%, 36%)
HSV	hsv(356, 86%, 63%)
CMYK	cmyk(0%, 85.6%, 80.6%, 37.3%)
CIE-LAB	lab(34.37, 53.40, 33.35)
CIE-LCH	lch(34.37, 62.96, 31.98°)
OKLab	oklab(45.5% 0.154 0.0723)
OKLCH	oklch(45.5% 0.17 25.1)
XYZ	xyz(15.0528, 8.1878, 2.0839)
Luminance	0.0819 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0171F #17A098

analogous

#A01763 #A0171F #A05317

triadic

#A0171F #1FA017 #171FA0

tetradic

#A0171F #63A017 #17A098 #5317A0

square

#A0171F #63A017 #17A098 #5317A0

split-complementary

#A0171F #17A053 #1763A0

monochromatic

#35080A #6A0F15 #A0171F #D61F29 #E54C55

Accessibility & contrast

On white

7.96

#A0171F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#A0171F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0171F

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0171F	#FFFFFF	#000000	##FFFFFF
##A0171F	1.00	7.96	2.64	7.96
#FFFFFF	7.96	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#453E1E

Deuteranopia (green-blind)

#665B19

Tritanopia (blue-blind)

#B1001C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a0171f;
/* rgb */ color: rgb(160, 23, 31);
/* oklch */ color: oklch(45.5% 0.170 25.1);

Tailwind

colors: {
  custom: {
    50: '#c6655b',
    500: '#a0171f',
    950: '#000000',
  },
}

SCSS

$custom: #a0171f;
$custom-light: #c6655b;
$custom-dark: #000000;

JSON

{
  "hex": "#a0171f",
  "rgb": {
    "r": 160,
    "g": 23,
    "b": 31
  },
  "hsl": {
    "h": 356.496,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45495,
    "c": 0.1701,
    "h": 25.1
  },
  "luminance": 0.08185
}

Semantic roles & 50–950 ramp

primary

#A0171F

secondary

#4CC7C0

accent

#F1E736

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150604

muted

#837A79

Preview Lab

Preview with #A0171F

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

Preview Lab → · Contrast checker → · Palette generator →