#AD3721#AD3721

#AD3721 is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.7% C 0.158 H 32.7°. Best body text is #FFFFFF at 6.28:1 contrast (WCAG AA passes).

Color values

HEX	#AD3721
RGB	rgb(173, 55, 33)
HSL	hsl(9, 68%, 40%)
HSV	hsv(9, 81%, 68%)
CMYK	cmyk(0%, 68.2%, 80.9%, 32.2%)
CIE-LAB	lab(40.78, 46.97, 39.52)
CIE-LCH	lch(40.78, 61.38, 40.08°)
OKLab	oklab(50.74% 0.1327 0.0853)
OKLCH	oklch(50.74% 0.158 32.7)
XYZ	xyz(18.8765, 11.7292, 2.7086)
Luminance	0.1173 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD3721 #2197AD

analogous

#AD2151 #AD3721 #AD7D21

triadic

#AD3721 #21AD37 #3721AD

tetradic

#AD3721 #51AD21 #2197AD #7D21AD

square

#AD3721 #51AD21 #2197AD #7D21AD

split-complementary

#AD3721 #21AD7D #2151AD

monochromatic

#46160D #7A2717 #AD3721 #D84D33 #E27A66

Accessibility & contrast

On white

6.28

#AD3721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#AD3721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD3721

6.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD3721	#FFFFFF	#000000	##FFFFFF
##AD3721	1.00	6.28	3.35	6.28
#FFFFFF	6.28	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59501D

Deuteranopia (green-blind)

#776A1C

Tritanopia (blue-blind)

#BF1033

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #ad3721;
/* rgb */ color: rgb(173, 55, 33);
/* oklch */ color: oklch(50.7% 0.158 32.7);

Tailwind

colors: {
  custom: {
    50: '#ce745e',
    500: '#ad3721',
    950: '#000000',
  },
}

SCSS

$custom: #ad3721;
$custom-light: #ce745e;
$custom-dark: #000000;

JSON

{
  "hex": "#ad3721",
  "rgb": {
    "r": 173,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 9.429,
    "s": 67.961,
    "l": 40.392
  },
  "oklch": {
    "l": 0.50742,
    "c": 0.15776,
    "h": 32.7
  },
  "luminance": 0.11726
}

Semantic roles & 50–950 ramp

primary

#AD3721

secondary

#62B8C7

accent

#D0EB3D

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150904

muted

#837B79

Preview Lab

Preview with #AD3721

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

Preview Lab → · Contrast checker → · Palette generator →