#AD2731#AD2731

#AD2731 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.3% C 0.170 H 22.5°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#AD2731
RGB	rgb(173, 39, 49)
HSL	hsl(356, 63%, 42%)
HSV	hsv(356, 77%, 68%)
CMYK	cmyk(0%, 77.5%, 71.7%, 32.2%)
CIE-LAB	lab(38.83, 53.52, 28.22)
CIE-LCH	lch(38.83, 60.50, 27.81°)
OKLab	oklab(49.34% 0.1567 0.0648)
OKLCH	oklch(49.34% 0.17 22.5)
XYZ	xyz(18.5156, 10.5599, 3.9685)
Luminance	0.1056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD2731 #27ADA3

analogous

#AD2774 #AD2731 #AD6027

triadic

#AD2731 #31AD27 #2731AD

tetradic

#AD2731 #74AD27 #27ADA3 #6027AD

square

#AD2731 #74AD27 #27ADA3 #6027AD

split-complementary

#AD2731 #27AD60 #2774AD

monochromatic

#491015 #7B1C23 #AD2731 #D33E49 #DF7078

Accessibility & contrast

On white

6.75

#AD2731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#AD2731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD2731

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD2731	#FFFFFF	#000000	##FFFFFF
##AD2731	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4930

Deuteranopia (green-blind)

#71662C

Tritanopia (blue-blind)

#BE002C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #ad2731;
/* rgb */ color: rgb(173, 39, 49);
/* oklch */ color: oklch(49.3% 0.170 22.5);

Tailwind

colors: {
  custom: {
    50: '#ce6d69',
    500: '#ad2731',
    950: '#000000',
  },
}

SCSS

$custom: #ad2731;
$custom-light: #ce6d69;
$custom-dark: #000000;

JSON

{
  "hex": "#ad2731",
  "rgb": {
    "r": 173,
    "g": 39,
    "b": 49
  },
  "hsl": {
    "h": 355.522,
    "s": 63.208,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49343,
    "c": 0.16956,
    "h": 22.5
  },
  "luminance": 0.10557
}

Semantic roles & 50–950 ramp

primary

#AD2731

secondary

#6AC6BF

accent

#E6DA42

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150806

muted

#837B7A

Preview Lab

Preview with #AD2731

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

Preview Lab → · Contrast checker → · Palette generator →