#AD371F#AD371F

#AD371F is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.158 H 33.3°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#AD371F
RGB	rgb(173, 55, 31)
HSL	hsl(10, 70%, 40%)
HSV	hsv(10, 82%, 68%)
CMYK	cmyk(0%, 68.2%, 82.1%, 32.2%)
CIE-LAB	lab(40.77, 46.90, 40.53)
CIE-LCH	lch(40.77, 61.99, 40.84°)
OKLab	oklab(50.72% 0.1322 0.0868)
OKLCH	oklch(50.72% 0.158 33.3)
XYZ	xyz(18.8493, 11.7184, 2.5654)
Luminance	0.1172 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD371F #1F95AD

analogous

#AD1F4E #AD371F #AD7E1F

triadic

#AD371F #1FAD37 #371FAD

tetradic

#AD371F #4EAD1F #1F95AD #7E1FAD

square

#AD371F #4EAD1F #1F95AD #7E1FAD

split-complementary

#AD371F #1FAD7E #1F4EAD

monochromatic

#45160C #792716 #AD371F #DA4C2F #E37963

Accessibility & contrast

On white

6.28

#AD371F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#AD371F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD371F

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD371F	#FFFFFF	#000000	##FFFFFF
##AD371F	1.00	6.28	3.34	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.34	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59501B

Deuteranopia (green-blind)

#776A19

Tritanopia (blue-blind)

#BF0F33

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ad371f;
/* rgb */ color: rgb(173, 55, 31);
/* oklch */ color: oklch(50.7% 0.158 33.3);

Tailwind

colors: {
  custom: {
    50: '#ce745d',
    500: '#ad371f',
    950: '#000000',
  },
}

SCSS

$custom: #ad371f;
$custom-light: #ce745d;
$custom-dark: #000000;

JSON

{
  "hex": "#ad371f",
  "rgb": {
    "r": 173,
    "g": 55,
    "b": 31
  },
  "hsl": {
    "h": 10.141,
    "s": 69.608,
    "l": 40
  },
  "oklch": {
    "l": 0.50724,
    "c": 0.15814,
    "h": 33.3
  },
  "luminance": 0.11716
}

Semantic roles & 50–950 ramp

primary

#AD371F

secondary

#60B6C8

accent

#CEEC3B

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AD371F

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

Preview Lab → · Contrast checker → · Palette generator →