#A01728#A01728

#A01728 is a mid, vivid red. Relative luminance 0.082; OKLCH L 45.6% C 0.169 H 21.9°. Best body text is #FFFFFF at 7.93:1 contrast (WCAG AA passes).

Color values

HEX	#A01728
RGB	rgb(160, 23, 40)
HSL	hsl(353, 75%, 36%)
HSV	hsv(353, 86%, 63%)
CMYK	cmyk(0%, 85.6%, 75%, 37.3%)
CIE-LAB	lab(34.48, 53.73, 28.02)
CIE-LCH	lch(34.48, 60.60, 27.54°)
OKLab	oklab(45.61% 0.1571 0.0632)
OKLCH	oklch(45.61% 0.169 21.9)
XYZ	xyz(15.1884, 8.2420, 2.7982)
Luminance	0.0824 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A01728 #17A08F

analogous

#A0176C #A01728 #A04A17

triadic

#A01728 #28A017 #1728A0

tetradic

#A01728 #6CA017 #17A08F #4A17A0

square

#A01728 #6CA017 #17A08F #4A17A0

split-complementary

#A01728 #17A04A #176CA0

monochromatic

#35080D #6A0F1B #A01728 #D61F35 #E54C5F

Accessibility & contrast

On white

7.93

#A01728 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.65

#A01728 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A01728

7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A01728	#FFFFFF	#000000	##FFFFFF
##A01728	1.00	7.93	2.65	7.93
#FFFFFF	7.93	1.00	21.00	1.00
#000000	2.65	21.00	1.00	21.00
##FFFFFF	7.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#443F27

Deuteranopia (green-blind)

#665B23

Tritanopia (blue-blind)

#B1001F

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #a01728;
/* rgb */ color: rgb(160, 23, 40);
/* oklch */ color: oklch(45.6% 0.169 21.9);

Tailwind

colors: {
  custom: {
    50: '#c56562',
    500: '#a01728',
    950: '#000000',
  },
}

SCSS

$custom: #a01728;
$custom-light: #c56562;
$custom-dark: #000000;

JSON

{
  "hex": "#a01728",
  "rgb": {
    "r": 160,
    "g": 23,
    "b": 40
  },
  "hsl": {
    "h": 352.555,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.45613,
    "c": 0.16933,
    "h": 21.9
  },
  "luminance": 0.0824
}

Semantic roles & 50–950 ramp

primary

#A01728

secondary

#4CC7B8

accent

#F1DA36

background

#FDF6F5

surface

#FAEBEA

border

#D3C6C6

text

#140605

muted

#837A79

Preview Lab

Preview with #A01728

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

Preview Lab → · Contrast checker → · Palette generator →