#AD281F#AD281F

#AD281F is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.2% C 0.171 H 28.9°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#AD281F
RGB	rgb(173, 40, 31)
HSL	hsl(4, 70%, 40%)
HSV	hsv(4, 82%, 68%)
CMYK	cmyk(0%, 76.9%, 82.1%, 32.2%)
CIE-LAB	lab(38.73, 52.50, 38.58)
CIE-LCH	lch(38.73, 65.15, 36.31°)
OKLab	oklab(49.2% 0.1496 0.0825)
OKLCH	oklch(49.2% 0.171 28.9)
XYZ	xyz(18.2419, 10.5037, 2.3630)
Luminance	0.1050 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD281F #1FA4AD

analogous

#AD1F5D #AD281F #AD6F1F

triadic

#AD281F #1FAD28 #281FAD

tetradic

#AD281F #5DAD1F #1FA4AD #6F1FAD

square

#AD281F #5DAD1F #1FA4AD #6F1FAD

split-complementary

#AD281F #1FAD6F #1F5DAD

monochromatic

#45100C #791C16 #AD281F #DA3A2F #E36B63

Accessibility & contrast

On white

6.77

#AD281F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#AD281F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD281F

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD281F	#FFFFFF	#000000	##FFFFFF
##AD281F	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51491C

Deuteranopia (green-blind)

#726618

Tritanopia (blue-blind)

#BF0028

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ad281f;
/* rgb */ color: rgb(173, 40, 31);
/* oklch */ color: oklch(49.2% 0.171 28.9);

Tailwind

colors: {
  custom: {
    50: '#cf6d5c',
    500: '#ad281f',
    950: '#000000',
  },
}

SCSS

$custom: #ad281f;
$custom-light: #cf6d5c;
$custom-dark: #000000;

JSON

{
  "hex": "#ad281f",
  "rgb": {
    "r": 173,
    "g": 40,
    "b": 31
  },
  "hsl": {
    "h": 3.803,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.49203,
    "c": 0.17085,
    "h": 28.9
  },
  "luminance": 0.10501
}

Semantic roles & 50–950 ramp

primary

#AD281F

secondary

#60C1C8

accent

#E1EC3B

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AD281F

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

Preview Lab → · Contrast checker → · Palette generator →