#AC2421#AC2421

#AC2421 is a mid, vivid red. Relative luminance 0.101; OKLCH L 48.7% C 0.173 H 27.4°. Best body text is #FFFFFF at 6.93:1 contrast (WCAG AA passes).

Color values

HEX#AC2421
RGBrgb(172, 36, 33)
HSLhsl(1, 68%, 40%)
HSVhsv(1, 81%, 67%)
CMYKcmyk(0%, 79.1%, 80.8%, 32.5%)
CIE-LABlab(38.10, 53.51, 36.79)
CIE-LCHlch(38.10, 64.94, 34.51°)
OKLaboklab(48.71% 0.1533 0.0794)
OKLCHoklch(48.71% 0.173 27.4)
XYZxyz(17.9208, 10.1451, 2.4532)
Luminance0.1014 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AC2421 #21A9AC
analogous
#AC2163 #AC2421 #AC6921
triadic
#AC2421 #21AC24 #2421AC
tetradic
#AC2421 #63AC21 #21A9AC #6921AC
square
#AC2421 #63AC21 #21A9AC #6921AC
split-complementary
#AC2421 #21AC69 #2163AC
monochromatic
#450F0D #791917 #AC2421 #D83632 #E26866

Accessibility & contrast

On white

6.93
#AC2421 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.03
#AC2421 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC2421
6.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AC2421#FFFFFF#000000##FFFFFF
##AC24211.006.933.036.93
#FFFFFF6.931.0021.001.00
#0000003.0321.001.0021.00
##FFFFFF6.931.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4F471F
Deuteranopia (green-blind)
#70641A
Tritanopia (blue-blind)
#BE0025
Achromatopsia (no color)
#5A5A5A

Design tokens & code

CSS
--color: #ac2421;
/* rgb */ color: rgb(172, 36, 33);
/* oklch */ color: oklch(48.7% 0.173 27.4);
Tailwind
colors: {
  custom: {
    50: '#ce6c5d',
    500: '#ac2421',
    950: '#000000',
  },
}
SCSS
$custom: #ac2421;
$custom-light: #ce6c5d;
$custom-dark: #000000;
JSON
{
  "hex": "#ac2421",
  "rgb": {
    "r": 172,
    "g": 36,
    "b": 33
  },
  "hsl": {
    "h": 1.295,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.48705,
    "c": 0.17264,
    "h": 27.4
  },
  "luminance": 0.10142
}

Semantic roles & 50–950 ramp

primary
#AC2421
secondary
#62C5C7
accent
#E7EB3D
background
#FEF6F5
surface
#FCECE9
border
#D5C7C5
text
#160704
muted
#847A79

Preview Lab

Preview with #AC2421

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

Preview Lab → · Contrast checker → · Palette generator →

#AC2421 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva