#AD2828#AD2828

#AD2828 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.3% C 0.170 H 26.1°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX#AD2828
RGBrgb(173, 40, 40)
HSLhsl(0, 62%, 42%)
HSVhsv(0, 77%, 68%)
CMYKcmyk(0%, 76.9%, 76.9%, 32.2%)
CIE-LABlab(38.83, 52.81, 33.61)
CIE-LCHlch(38.83, 62.59, 32.47°)
OKLaboklab(49.3% 0.1524 0.0745)
OKLCHoklch(49.3% 0.17 26.1)
XYZxyz(18.3775, 10.5579, 3.0773)
Luminance0.1056 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#AD2828 #28ADAD
analogous
#AD286B #AD2828 #AD6B28
triadic
#AD2828 #28AD28 #2828AD
tetradic
#AD2828 #6BAD28 #28ADAD #6B28AD
square
#AD2828 #6BAD28 #28ADAD #6B28AD
split-complementary
#AD2828 #28AD6B #286BAD
monochromatic
#4A1111 #7B1D1D #AD2828 #D33F3F #DE7171

Accessibility & contrast

On white

6.75
#AD2828 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.11
#AD2828 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD2828
6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##AD2828#FFFFFF#000000##FFFFFF
##AD28281.006.753.116.75
#FFFFFF6.751.0021.001.00
#0000003.1121.001.0021.00
##FFFFFF6.751.0021.001.00

Color blindness preview

Protanopia (red-blind)
#514926
Deuteranopia (green-blind)
#726623
Tritanopia (blue-blind)
#BF002A
Achromatopsia (no color)
#5B5B5B

Design tokens & code

CSS
--color: #ad2828;
/* rgb */ color: rgb(173, 40, 40);
/* oklch */ color: oklch(49.3% 0.170 26.1);
Tailwind
colors: {
  custom: {
    50: '#ce6e62',
    500: '#ad2828',
    950: '#000000',
  },
}
SCSS
$custom: #ad2828;
$custom-light: #ce6e62;
$custom-dark: #000000;
JSON
{
  "hex": "#ad2828",
  "rgb": {
    "r": 173,
    "g": 40,
    "b": 40
  },
  "hsl": {
    "h": 0,
    "s": 62.441,
    "l": 41.765
  },
  "oklch": {
    "l": 0.49303,
    "c": 0.16968,
    "h": 26.1
  },
  "luminance": 0.10555
}

Semantic roles & 50–950 ramp

primary
#AD2828
secondary
#6CC5C5
accent
#E6E642
background
#FDF7F5
surface
#FBEDEA
border
#D4C8C6
text
#150805
muted
#837B79

Preview Lab

Preview with #AD2828

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

Preview Lab → · Contrast checker → · Palette generator →

#AD2828 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva