#AC2828#AC2828

#AC2828 is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.1% C 0.169 H 26.0°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#AC2828
RGB	rgb(172, 40, 40)
HSL	hsl(0, 62%, 42%)
HSV	hsv(0, 77%, 67%)
CMYK	cmyk(0%, 76.7%, 76.7%, 32.5%)
CIE-LAB	lab(38.63, 52.50, 33.33)
CIE-LCH	lch(38.63, 62.19, 32.41°)
OKLab	oklab(49.12% 0.1516 0.074)
OKLCH	oklch(49.12% 0.169 26)
XYZ	xyz(18.1572, 10.4443, 3.0670)
Luminance	0.1044 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC2828 #28ACAC

analogous

#AC286A #AC2828 #AC6A28

triadic

#AC2828 #28AC28 #2828AC

tetradic

#AC2828 #6AAC28 #28ACAC #6A28AC

square

#AC2828 #6AAC28 #28ACAC #6A28AC

split-complementary

#AC2828 #28AC6A #286AAC

monochromatic

#491111 #7A1C1C #AC2828 #D23F3F #DE7171

Accessibility & contrast

On white

6.80

#AC2828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#AC2828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2828

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC2828	#FFFFFF	#000000	##FFFFFF
##AC2828	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504926

Deuteranopia (green-blind)

#716523

Tritanopia (blue-blind)

#BE002A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ac2828;
/* rgb */ color: rgb(172, 40, 40);
/* oklch */ color: oklch(49.1% 0.169 26.0);

Tailwind

colors: {
  custom: {
    50: '#cd6d62',
    500: '#ac2828',
    950: '#000000',
  },
}

SCSS

$custom: #ac2828;
$custom-light: #cd6d62;
$custom-dark: #000000;

JSON

{
  "hex": "#ac2828",
  "rgb": {
    "r": 172,
    "g": 40,
    "b": 40
  },
  "hsl": {
    "h": 0,
    "s": 62.264,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49121,
    "c": 0.16868,
    "h": 26
  },
  "luminance": 0.10441
}

Semantic roles & 50–950 ramp

primary

#AC2828

secondary

#6BC5C5

accent

#E5E542

background

#FDF6F5

surface

#FBECEA

border

#D4C7C6

text

#150805

muted

#837B79

Preview Lab

Preview with #AC2828

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

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