#AD371B#AD371B

#AD371B is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.159 H 34.4°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#AD371B
RGB	rgb(173, 55, 27)
HSL	hsl(12, 73%, 39%)
HSV	hsv(12, 84%, 68%)
CMYK	cmyk(0%, 68.2%, 84.4%, 32.2%)
CIE-LAB	lab(40.73, 46.78, 42.49)
CIE-LCH	lch(40.73, 63.20, 42.25°)
OKLab	oklab(50.69% 0.1311 0.0897)
OKLCH	oklch(50.69% 0.159 34.4)
XYZ	xyz(18.7998, 11.6986, 2.3048)
Luminance	0.1170 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD371B #1B91AD

analogous

#AD1B48 #AD371B #AD801B

triadic

#AD371B #1BAD37 #371BAD

tetradic

#AD371B #48AD1B #1B91AD #801BAD

square

#AD371B #48AD1B #1B91AD #801BAD

split-complementary

#AD371B #1BAD80 #1B48AD

monochromatic

#43150A #782613 #AD371B #DD4B28 #E6775D

Accessibility & contrast

On white

6.29

#AD371B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#AD371B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD371B

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD371B	#FFFFFF	#000000	##FFFFFF
##AD371B	1.00	6.29	3.34	6.29
#FFFFFF	6.29	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A4F16

Deuteranopia (green-blind)

#776A15

Tritanopia (blue-blind)

#BF0E32

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ad371b;
/* rgb */ color: rgb(173, 55, 27);
/* oklch */ color: oklch(50.7% 0.159 34.4);

Tailwind

colors: {
  custom: {
    50: '#ce745a',
    500: '#ad371b',
    950: '#000000',
  },
}

SCSS

$custom: #ad371b;
$custom-light: #ce745a;
$custom-dark: #000000;

JSON

{
  "hex": "#ad371b",
  "rgb": {
    "r": 173,
    "g": 55,
    "b": 27
  },
  "hsl": {
    "h": 11.507,
    "s": 73,
    "l": 39.216
  },
  "oklch": {
    "l": 0.50689,
    "c": 0.15886,
    "h": 34.4
  },
  "luminance": 0.11696
}

Semantic roles & 50–950 ramp

primary

#AD371B

secondary

#5AB4CA

accent

#CCF038

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AD371B

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

Preview Lab → · Contrast checker → · Palette generator →