#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
RGB	rgb(173, 40, 40)
HSL	hsl(0, 62%, 42%)
HSV	hsv(0, 77%, 68%)
CMYK	cmyk(0%, 76.9%, 76.9%, 32.2%)
CIE-LAB	lab(38.83, 52.81, 33.61)
CIE-LCH	lch(38.83, 62.59, 32.47°)
OKLab	oklab(49.3% 0.1524 0.0745)
OKLCH	oklch(49.3% 0.17 26.1)
XYZ	xyz(18.3775, 10.5579, 3.0773)
Luminance	0.1056 (WCAG relative)
Temperature	warm
Family	red

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
##AD2828	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

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 →