#AD3138#AD3138

#AD3138 is a mid, vivid red. Relative luminance 0.114; OKLCH L 50.4% C 0.160 H 22.1°. Best body text is #FFFFFF at 6.42:1 contrast (WCAG AA passes).

Color values

HEX	#AD3138
RGB	rgb(173, 49, 56)
HSL	hsl(357, 56%, 44%)
HSV	hsv(357, 72%, 68%)
CMYK	cmyk(0%, 71.7%, 67.6%, 32.2%)
CIE-LAB	lab(40.20, 50.38, 25.59)
CIE-LCH	lch(40.20, 56.51, 26.93°)
OKLab	oklab(50.4% 0.1482 0.0601)
OKLCH	oklch(50.4% 0.16 22.1)
XYZ	xyz(19.0477, 11.3692, 4.9321)
Luminance	0.1137 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD3138 #31ADA6

analogous

#AD3176 #AD3138 #AD6831

triadic

#AD3138 #38AD31 #3138AD

tetradic

#AD3138 #76AD31 #31ADA6 #6831AD

square

#AD3138 #76AD31 #31ADA6 #6831AD

split-complementary

#AD3138 #31AD68 #3176AD

monochromatic

#4E1619 #7D2329 #AD3138 #CD4E55 #DA7E83

Accessibility & contrast

On white

6.42

#AD3138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.27

#AD3138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD3138

6.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD3138	#FFFFFF	#000000	##FFFFFF
##AD3138	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)

#544E37

Deuteranopia (green-blind)

#736834

Tritanopia (blue-blind)

#BE0535

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #ad3138;
/* rgb */ color: rgb(173, 49, 56);
/* oklch */ color: oklch(50.4% 0.160 22.1);

Tailwind

colors: {
  custom: {
    50: '#cd726e',
    500: '#ad3138',
    950: '#000000',
  },
}

SCSS

$custom: #ad3138;
$custom-light: #cd726e;
$custom-dark: #000000;

JSON

{
  "hex": "#ad3138",
  "rgb": {
    "r": 173,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.613,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.50395,
    "c": 0.15994,
    "h": 22.1
  },
  "luminance": 0.11366
}

Semantic roles & 50–950 ramp

primary

#AD3138

secondary

#77C3BF

accent

#DFD749

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #AD3138

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

Preview Lab → · Contrast checker → · Palette generator →