#AD371D#AD371D

#AD371D is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.159 H 33.9°. Best body text is #FFFFFF at 6.29:1 contrast (WCAG AA passes).

Color values

HEX	#AD371D
RGB	rgb(173, 55, 29)
HSL	hsl(11, 71%, 40%)
HSV	hsv(11, 83%, 68%)
CMYK	cmyk(0%, 68.2%, 83.2%, 32.2%)
CIE-LAB	lab(40.75, 46.84, 41.53)
CIE-LCH	lch(40.75, 62.60, 41.56°)
OKLab	oklab(50.71% 0.1316 0.0883)
OKLCH	oklch(50.71% 0.159 33.9)
XYZ	xyz(18.8237, 11.7082, 2.4309)
Luminance	0.1171 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD371D #1D93AD

analogous

#AD1D4B #AD371D #AD7F1D

triadic

#AD371D #1DAD37 #371DAD

tetradic

#AD371D #4BAD1D #1D93AD #7F1DAD

square

#AD371D #4BAD1D #1D93AD #7F1DAD

split-complementary

#AD371D #1DAD7F #1D4BAD

monochromatic

#44160B #792614 #AD371D #DC4B2C #E47860

Accessibility & contrast

On white

6.29

#AD371D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.34

#AD371D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD371D

6.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD371D	#FFFFFF	#000000	##FFFFFF
##AD371D	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)

#5A4F19

Deuteranopia (green-blind)

#776A17

Tritanopia (blue-blind)

#BF0F32

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ad371d;
/* rgb */ color: rgb(173, 55, 29);
/* oklch */ color: oklch(50.7% 0.159 33.9);

Tailwind

colors: {
  custom: {
    50: '#ce745c',
    500: '#ad371d',
    950: '#000000',
  },
}

SCSS

$custom: #ad371d;
$custom-light: #ce745c;
$custom-dark: #000000;

JSON

{
  "hex": "#ad371d",
  "rgb": {
    "r": 173,
    "g": 55,
    "b": 29
  },
  "hsl": {
    "h": 10.833,
    "s": 71.287,
    "l": 39.608
  },
  "oklch": {
    "l": 0.50706,
    "c": 0.1585,
    "h": 33.9
  },
  "luminance": 0.11705
}

Semantic roles & 50–950 ramp

primary

#AD371D

secondary

#5DB5C9

accent

#CDEE3A

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AD371D

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

Preview Lab → · Contrast checker → · Palette generator →