#AC2B21#AC2B21

#AC2B21 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.3% C 0.167 H 29.1°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#AC2B21
RGB	rgb(172, 43, 33)
HSL	hsl(4, 68%, 40%)
HSV	hsv(4, 81%, 67%)
CMYK	cmyk(0%, 75%, 80.8%, 32.5%)
CIE-LAB	lab(38.92, 51.23, 37.61)
CIE-LCH	lch(38.92, 63.56, 36.28°)
OKLab	oklab(49.31% 0.1461 0.0812)
OKLCH	oklch(49.31% 0.167 29.1)
XYZ	xyz(18.1538, 10.6111, 2.5308)
Luminance	0.1061 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AC2B21 #21A2AC

analogous

#AC215C #AC2B21 #AC7121

triadic

#AC2B21 #21AC2B #2B21AC

tetradic

#AC2B21 #5CAC21 #21A2AC #7121AC

square

#AC2B21 #5CAC21 #21A2AC #7121AC

split-complementary

#AC2B21 #21AC71 #215CAC

monochromatic

#45110D #791E17 #AC2B21 #D83E32 #E26F66

Accessibility & contrast

On white

6.73

#AC2B21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#AC2B21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2B21

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AC2B21	#FFFFFF	#000000	##FFFFFF
##AC2B21	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524A1E

Deuteranopia (green-blind)

#72661B

Tritanopia (blue-blind)

#BE002A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #ac2b21;
/* rgb */ color: rgb(172, 43, 33);
/* oklch */ color: oklch(49.3% 0.167 29.1);

Tailwind

colors: {
  custom: {
    50: '#ce6f5e',
    500: '#ac2b21',
    950: '#000000',
  },
}

SCSS

$custom: #ac2b21;
$custom-light: #ce6f5e;
$custom-dark: #000000;

JSON

{
  "hex": "#ac2b21",
  "rgb": {
    "r": 172,
    "g": 43,
    "b": 33
  },
  "hsl": {
    "h": 4.317,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.49312,
    "c": 0.16718,
    "h": 29.1
  },
  "luminance": 0.10608
}

Semantic roles & 50–950 ramp

primary

#AC2B21

secondary

#62C0C7

accent

#DEEB3D

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #AC2B21

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

Preview Lab → · Contrast checker → · Palette generator →