#AC2728#AC2728

#AC2728 is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.0% C 0.169 H 25.8°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#AC2728
RGB	rgb(172, 39, 40)
HSL	hsl(360, 63%, 41%)
HSV	hsv(360, 77%, 67%)
CMYK	cmyk(0%, 77.3%, 76.7%, 32.5%)
CIE-LAB	lab(38.51, 52.82, 33.21)
CIE-LCH	lch(38.51, 62.39, 32.16°)
OKLab	oklab(49.03% 0.1526 0.0737)
OKLCH	oklch(49.03% 0.169 25.8)
XYZ	xyz(18.1239, 10.3778, 3.0559)
Luminance	0.1037 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC2728 #27ACAB

analogous

#AC276B #AC2728 #AC6927

triadic

#AC2728 #28AC27 #2728AC

tetradic

#AC2728 #6BAC27 #27ACAB #6927AC

square

#AC2728 #6BAC27 #27ACAB #6927AC

split-complementary

#AC2728 #27AC69 #276BAC

monochromatic

#481011 #7A1C1C #AC2728 #D33D3E #DE6F70

Accessibility & contrast

On white

6.83

#AC2728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#AC2728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2728

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC2728	#FFFFFF	#000000	##FFFFFF
##AC2728	1.00	6.83	3.08	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504826

Deuteranopia (green-blind)

#716523

Tritanopia (blue-blind)

#BE0029

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ac2728;
/* rgb */ color: rgb(172, 39, 40);
/* oklch */ color: oklch(49.0% 0.169 25.8);

Tailwind

colors: {
  custom: {
    50: '#ce6d62',
    500: '#ac2728',
    950: '#000000',
  },
}

SCSS

$custom: #ac2728;
$custom-light: #ce6d62;
$custom-dark: #000000;

JSON

{
  "hex": "#ac2728",
  "rgb": {
    "r": 172,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.549,
    "s": 63.033,
    "l": 41.373
  },
  "oklch": {
    "l": 0.49034,
    "c": 0.16949,
    "h": 25.8
  },
  "luminance": 0.10375
}

Semantic roles & 50–950 ramp

primary

#AC2728

secondary

#6AC5C4

accent

#E6E542

background

#FDF6F5

surface

#FBECEA

border

#D4C7C6

text

#150805

muted

#837B79

Preview Lab

Preview with #AC2728

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

Preview Lab → · Contrast checker → · Palette generator →