#AD3137#AD3137

#AD3137 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.4% C 0.160 H 22.5°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#AD3137
RGB	rgb(173, 49, 55)
HSL	hsl(357, 56%, 44%)
HSV	hsv(357, 72%, 68%)
CMYK	cmyk(0%, 71.7%, 68.2%, 32.2%)
CIE-LAB	lab(40.18, 50.32, 26.19)
CIE-LCH	lch(40.18, 56.73, 27.49°)
OKLab	oklab(50.38% 0.1478 0.0613)
OKLCH	oklch(50.38% 0.16 22.5)
XYZ	xyz(19.0235, 11.3595, 4.8046)
Luminance	0.1136 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD3137 #31ADA7

analogous

#AD3175 #AD3137 #AD6931

triadic

#AD3137 #37AD31 #3137AD

tetradic

#AD3137 #75AD31 #31ADA7 #6931AD

square

#AD3137 #75AD31 #31ADA7 #6931AD

split-complementary

#AD3137 #31AD69 #3175AD

monochromatic

#4E1619 #7D2328 #AD3137 #CD4E54 #DA7E82

Accessibility & contrast

On white

6.42

#AD3137 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#AD3137 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD3137

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD3137	#FFFFFF	#000000	##FFFFFF
##AD3137	1.00	6.42	3.27	6.42
#FFFFFF	6.42	1.00	21.00	1.00
#000000	3.27	21.00	1.00	21.00
##FFFFFF	6.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544E36

Deuteranopia (green-blind)

#736833

Tritanopia (blue-blind)

#BE0534

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ad3137;
/* rgb */ color: rgb(173, 49, 55);
/* oklch */ color: oklch(50.4% 0.160 22.5);

Tailwind

colors: {
  custom: {
    50: '#cd726e',
    500: '#ad3137',
    950: '#000000',
  },
}

SCSS

$custom: #ad3137;
$custom-light: #cd726e;
$custom-dark: #000000;

JSON

{
  "hex": "#ad3137",
  "rgb": {
    "r": 173,
    "g": 49,
    "b": 55
  },
  "hsl": {
    "h": 357.097,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.50378,
    "c": 0.16004,
    "h": 22.5
  },
  "luminance": 0.11357
}

Semantic roles & 50–950 ramp

primary

#AD3137

secondary

#77C3C0

accent

#DFD849

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #AD3137

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

Preview Lab → · Contrast checker → · Palette generator →