#AC2821#AC2821

#AC2821 is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.0% C 0.170 H 28.3°. Best body text is #FFFFFF at 6.82:1 contrast (WCAG AA passes).

Color values

HEX	#AC2821
RGB	rgb(172, 40, 33)
HSL	hsl(3, 68%, 40%)
HSV	hsv(3, 81%, 67%)
CMYK	cmyk(0%, 76.7%, 80.8%, 32.5%)
CIE-LAB	lab(38.55, 52.25, 37.24)
CIE-LCH	lch(38.55, 64.17, 35.48°)
OKLab	oklab(49.04% 0.1493 0.0804)
OKLCH	oklch(49.04% 0.17 28.3)
XYZ	xyz(18.0487, 10.4009, 2.4958)
Luminance	0.1040 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC2821 #21A5AC

analogous

#AC215F #AC2821 #AC6E21

triadic

#AC2821 #21AC28 #2821AC

tetradic

#AC2821 #5FAC21 #21A5AC #6E21AC

square

#AC2821 #5FAC21 #21A5AC #6E21AC

split-complementary

#AC2821 #21AC6E #215FAC

monochromatic

#45100D #791C17 #AC2821 #D83B32 #E26C66

Accessibility & contrast

On white

6.82

#AC2821 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#AC2821 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2821

6.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC2821	#FFFFFF	#000000	##FFFFFF
##AC2821	1.00	6.82	3.08	6.82
#FFFFFF	6.82	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51481F

Deuteranopia (green-blind)

#71651B

Tritanopia (blue-blind)

#BE0028

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ac2821;
/* rgb */ color: rgb(172, 40, 33);
/* oklch */ color: oklch(49.0% 0.170 28.3);

Tailwind

colors: {
  custom: {
    50: '#ce6d5d',
    500: '#ac2821',
    950: '#000000',
  },
}

SCSS

$custom: #ac2821;
$custom-light: #ce6d5d;
$custom-dark: #000000;

JSON

{
  "hex": "#ac2821",
  "rgb": {
    "r": 172,
    "g": 40,
    "b": 33
  },
  "hsl": {
    "h": 3.022,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.4904,
    "c": 0.16959,
    "h": 28.3
  },
  "luminance": 0.10398
}

Semantic roles & 50–950 ramp

primary

#AC2821

secondary

#62C2C7

accent

#E2EB3D

background

#FDF6F5

surface

#FBECE9

border

#D4C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AC2821

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

Preview Lab → · Contrast checker → · Palette generator →