#AD2521#AD2521

#AD2521 is a mid, vivid red. Relative luminance 0.103; OKLCH L 49.0% C 0.173 H 27.6°. Best body text is #FFFFFF at 6.86:1 contrast (WCAG AA passes).

Color values

HEX	#AD2521
RGB	rgb(173, 37, 33)
HSL	hsl(2, 68%, 40%)
HSV	hsv(2, 81%, 68%)
CMYK	cmyk(0%, 78.6%, 80.9%, 32.2%)
CIE-LAB	lab(38.41, 53.51, 37.17)
CIE-LCH	lch(38.41, 65.15, 34.78°)
OKLab	oklab(48.97% 0.1532 0.0801)
OKLCH	oklch(48.97% 0.173 27.6)
XYZ	xyz(18.1719, 10.3201, 2.4737)
Luminance	0.1032 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD2521 #21A9AD

analogous

#AD2163 #AD2521 #AD6B21

triadic

#AD2521 #21AD25 #2521AD

tetradic

#AD2521 #63AD21 #21A9AD #6B21AD

square

#AD2521 #63AD21 #21A9AD #6B21AD

split-complementary

#AD2521 #21AD6B #2163AD

monochromatic

#460F0D #7A1A17 #AD2521 #D83833 #E26A66

Accessibility & contrast

On white

6.86

#AD2521 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#AD2521 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD2521

6.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD2521	#FFFFFF	#000000	##FFFFFF
##AD2521	1.00	6.86	3.06	6.86
#FFFFFF	6.86	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50481F

Deuteranopia (green-blind)

#71651A

Tritanopia (blue-blind)

#BF0026

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #ad2521;
/* rgb */ color: rgb(173, 37, 33);
/* oklch */ color: oklch(49.0% 0.173 27.6);

Tailwind

colors: {
  custom: {
    50: '#cf6c5d',
    500: '#ad2521',
    950: '#000000',
  },
}

SCSS

$custom: #ad2521;
$custom-light: #cf6c5d;
$custom-dark: #000000;

JSON

{
  "hex": "#ad2521",
  "rgb": {
    "r": 173,
    "g": 37,
    "b": 33
  },
  "hsl": {
    "h": 1.714,
    "s": 67.961,
    "l": 40.392
  },
  "oklch": {
    "l": 0.4897,
    "c": 0.17287,
    "h": 27.6
  },
  "luminance": 0.10317
}

Semantic roles & 50–950 ramp

primary

#AD2521

secondary

#62C4C7

accent

#E6EB3D

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160804

muted

#847A79

Preview Lab

Preview with #AD2521

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

Preview Lab → · Contrast checker → · Palette generator →