#AD271B#AD271B

#AD271B is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.1% C 0.172 H 29.7°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#AD271B
RGB	rgb(173, 39, 27)
HSL	hsl(5, 73%, 39%)
HSV	hsv(5, 84%, 68%)
CMYK	cmyk(0%, 77.5%, 84.4%, 32.2%)
CIE-LAB	lab(38.58, 52.71, 40.54)
CIE-LCH	lch(38.58, 66.50, 37.57°)
OKLab	oklab(49.08% 0.1495 0.0853)
OKLCH	oklch(49.08% 0.172 29.7)
XYZ	xyz(18.1592, 10.4173, 2.0913)
Luminance	0.1041 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD271B #1BA1AD

analogous

#AD1B58 #AD271B #AD701B

triadic

#AD271B #1BAD27 #271BAD

tetradic

#AD271B #58AD1B #1BA1AD #701BAD

square

#AD271B #58AD1B #1BA1AD #701BAD

split-complementary

#AD271B #1BAD70 #1B58AD

monochromatic

#430F0A #781B13 #AD271B #DD3728 #E6685D

Accessibility & contrast

On white

6.81

#AD271B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#AD271B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD271B

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD271B	#FFFFFF	#000000	##FFFFFF
##AD271B	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514818

Deuteranopia (green-blind)

#726513

Tritanopia (blue-blind)

#BF0026

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ad271b;
/* rgb */ color: rgb(173, 39, 27);
/* oklch */ color: oklch(49.1% 0.172 29.7);

Tailwind

colors: {
  custom: {
    50: '#cf6d59',
    500: '#ad271b',
    950: '#000000',
  },
}

SCSS

$custom: #ad271b;
$custom-light: #cf6d59;
$custom-dark: #000000;

JSON

{
  "hex": "#ad271b",
  "rgb": {
    "r": 173,
    "g": 39,
    "b": 27
  },
  "hsl": {
    "h": 4.932,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.4908,
    "c": 0.17215,
    "h": 29.7
  },
  "luminance": 0.10414
}

Semantic roles & 50–950 ramp

primary

#AD271B

secondary

#5AC0CA

accent

#E1F038

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AD271B

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

Preview Lab → · Contrast checker → · Palette generator →