#AC3521#AC3521

#AC3521 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.3% C 0.159 H 32.1°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX#AC3521
RGBrgb(172, 53, 33)
HSLhsl(9, 68%, 40%)
HSVhsv(9, 81%, 67%)
CMYKcmyk(0%, 69.2%, 80.8%, 32.5%)
CIE-LABlab(40.29, 47.45, 38.98)
CIE-LCHlch(40.29, 61.40, 39.40°)
OKLaboklab(50.34% 0.1343 0.0842)
OKLCHoklch(50.34% 0.159 32.1)
XYZxyz(18.5630, 11.4295, 2.6672)
Luminance0.1143 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AC3521 #2198AC
analogous
#AC2153 #AC3521 #AC7A21
triadic
#AC3521 #21AC35 #3521AC
tetradic
#AC3521 #53AC21 #2198AC #7A21AC
square
#AC3521 #53AC21 #2198AC #7A21AC
split-complementary
#AC3521 #21AC7A #2153AC
monochromatic
#45150D #792517 #AC3521 #D84A32 #E27866

Accessibility & contrast

On white

6.39
#AC3521 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.29
#AC3521 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AC3521
6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AC3521#FFFFFF#000000##FFFFFF
##AC35211.006.393.296.39
#FFFFFF6.391.0021.001.00
#0000003.2921.001.0021.00
##FFFFFF6.391.0021.001.00

Color blindness preview

Protanopia (red-blind)
#584E1E
Deuteranopia (green-blind)
#75691C
Tritanopia (blue-blind)
#BE0A31
Achromatopsia (no color)
#5F5F5F

Design tokens & code

CSS
--color: #ac3521;
/* rgb */ color: rgb(172, 53, 33);
/* oklch */ color: oklch(50.3% 0.159 32.1);
Tailwind
colors: {
  custom: {
    50: '#cd735e',
    500: '#ac3521',
    950: '#000000',
  },
}
SCSS
$custom: #ac3521;
$custom-light: #cd735e;
$custom-dark: #000000;
JSON
{
  "hex": "#ac3521",
  "rgb": {
    "r": 172,
    "g": 53,
    "b": 33
  },
  "hsl": {
    "h": 8.633,
    "s": 67.805,
    "l": 40.196
  },
  "oklch": {
    "l": 0.50342,
    "c": 0.15852,
    "h": 32.1
  },
  "luminance": 0.11427
}

Semantic roles & 50–950 ramp

primary
#AC3521
secondary
#62B8C7
accent
#D2EB3D
background
#FDF7F5
surface
#FBEDE9
border
#D4C8C5
text
#150904
muted
#837B79

Preview Lab

Preview with #AC3521

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

Preview Lab → · Contrast checker → · Palette generator →

#AC3521 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva