#AD2728#AD2728

#AD2728 is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.2% C 0.170 H 25.8°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#AD2728
RGB	rgb(173, 39, 40)
HSL	hsl(360, 63%, 42%)
HSV	hsv(360, 77%, 68%)
CMYK	cmyk(0%, 77.5%, 76.9%, 32.2%)
CIE-LAB	lab(38.71, 53.13, 33.48)
CIE-LCH	lch(38.71, 62.80, 32.22°)
OKLab	oklab(49.22% 0.1535 0.0743)
OKLCH	oklch(49.22% 0.17 25.8)
XYZ	xyz(18.3443, 10.4914, 3.0662)
Luminance	0.1049 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD2728 #27ADAC

analogous

#AD276B #AD2728 #AD6927

triadic

#AD2728 #28AD27 #2728AD

tetradic

#AD2728 #6BAD27 #27ADAC #6927AD

square

#AD2728 #6BAD27 #27ADAC #6927AD

split-complementary

#AD2728 #27AD69 #276BAD

monochromatic

#491011 #7B1C1C #AD2728 #D33E3F #DF7071

Accessibility & contrast

On white

6.78

#AD2728 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#AD2728 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD2728

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD2728	#FFFFFF	#000000	##FFFFFF
##AD2728	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504926

Deuteranopia (green-blind)

#716623

Tritanopia (blue-blind)

#BF0029

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ad2728;
/* rgb */ color: rgb(173, 39, 40);
/* oklch */ color: oklch(49.2% 0.170 25.8);

Tailwind

colors: {
  custom: {
    50: '#ce6d62',
    500: '#ad2728',
    950: '#000000',
  },
}

SCSS

$custom: #ad2728;
$custom-light: #ce6d62;
$custom-dark: #000000;

JSON

{
  "hex": "#ad2728",
  "rgb": {
    "r": 173,
    "g": 39,
    "b": 40
  },
  "hsl": {
    "h": 359.552,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49217,
    "c": 0.17048,
    "h": 25.8
  },
  "luminance": 0.10488
}

Semantic roles & 50–950 ramp

primary

#AD2728

secondary

#6AC6C5

accent

#E6E542

background

#FDF6F5

surface

#FBECEA

border

#D4C7C6

text

#150805

muted

#837B79

Preview Lab

Preview with #AD2728

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

Preview Lab → · Contrast checker → · Palette generator →