#AD281B#AD281B

#AD281B is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.2% C 0.171 H 30.0°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#AD281B
RGB	rgb(173, 40, 27)
HSL	hsl(5, 73%, 39%)
HSV	hsv(5, 84%, 68%)
CMYK	cmyk(0%, 76.9%, 84.4%, 32.2%)
CIE-LAB	lab(38.70, 52.39, 40.65)
CIE-LCH	lch(38.70, 66.31, 37.81°)
OKLab	oklab(49.17% 0.1485 0.0856)
OKLCH	oklch(49.17% 0.171 30)
XYZ	xyz(18.1924, 10.4839, 2.1024)
Luminance	0.1048 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD281B #1BA0AD

analogous

#AD1B57 #AD281B #AD711B

triadic

#AD281B #1BAD28 #281BAD

tetradic

#AD281B #57AD1B #1BA0AD #711BAD

square

#AD281B #57AD1B #1BA0AD #711BAD

split-complementary

#AD281B #1BAD71 #1B57AD

monochromatic

#43100A #781C13 #AD281B #DD3828 #E6695D

Accessibility & contrast

On white

6.78

#AD281B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#AD281B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD281B

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD281B	#FFFFFF	#000000	##FFFFFF
##AD281B	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)

#524818

Deuteranopia (green-blind)

#726613

Tritanopia (blue-blind)

#BF0027

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ad281b;
/* rgb */ color: rgb(173, 40, 27);
/* oklch */ color: oklch(49.2% 0.171 30.0);

Tailwind

colors: {
  custom: {
    50: '#cf6d59',
    500: '#ad281b',
    950: '#000000',
  },
}

SCSS

$custom: #ad281b;
$custom-light: #cf6d59;
$custom-dark: #000000;

JSON

{
  "hex": "#ad281b",
  "rgb": {
    "r": 173,
    "g": 40,
    "b": 27
  },
  "hsl": {
    "h": 5.342,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.49167,
    "c": 0.17138,
    "h": 30
  },
  "luminance": 0.10481
}

Semantic roles & 50–950 ramp

primary

#AD281B

secondary

#5AC0CA

accent

#DFF038

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AD281B

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

Preview Lab → · Contrast checker → · Palette generator →