#AD303B#AD303B

#AD303B is a mid, vivid red. Relative luminance 0.113; OKLCH L 50.3% C 0.161 H 20.4°. Best body text is #FFFFFF at 6.44:1 contrast (WCAG AA passes).

Color values

HEX	#AD303B
RGB	rgb(173, 48, 59)
HSL	hsl(355, 57%, 43%)
HSV	hsv(355, 72%, 68%)
CMYK	cmyk(0%, 72.3%, 65.9%, 32.2%)
CIE-LAB	lab(40.11, 50.93, 23.64)
CIE-LCH	lch(40.11, 56.14, 24.90°)
OKLab	oklab(50.35% 0.1506 0.0561)
OKLCH	oklch(50.35% 0.161 20.4)
XYZ	xyz(19.0820, 11.3167, 5.3164)
Luminance	0.1131 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#AD303B #30ADA2

analogous

#AD3079 #AD303B #AD6330

triadic

#AD303B #3BAD30 #303BAD

tetradic

#AD303B #79AD30 #30ADA2 #6330AD

square

#AD303B #79AD30 #30ADA2 #6330AD

split-complementary

#AD303B #30AD63 #3079AD

monochromatic

#4D151A #7D232B #AD303B #CE4D58 #DB7D85

Accessibility & contrast

On white

6.44

#AD303B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.26

#AD303B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #AD303B

6.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##AD303B	#FFFFFF	#000000	##FFFFFF
##AD303B	1.00	6.44	3.26	6.44
#FFFFFF	6.44	1.00	21.00	1.00
#000000	3.26	21.00	1.00	21.00
##FFFFFF	6.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E3A

Deuteranopia (green-blind)

#726837

Tritanopia (blue-blind)

#BE0435

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #ad303b;
/* rgb */ color: rgb(173, 48, 59);
/* oklch */ color: oklch(50.3% 0.161 20.4);

Tailwind

colors: {
  custom: {
    50: '#cd7270',
    500: '#ad303b',
    950: '#000000',
  },
}

SCSS

$custom: #ad303b;
$custom-light: #cd7270;
$custom-dark: #000000;

JSON

{
  "hex": "#ad303b",
  "rgb": {
    "r": 173,
    "g": 48,
    "b": 59
  },
  "hsl": {
    "h": 354.72,
    "s": 56.561,
    "l": 43.333
  },
  "oklch": {
    "l": 0.50346,
    "c": 0.16071,
    "h": 20.4
  },
  "luminance": 0.11314
}

Semantic roles & 50–950 ramp

primary

#AD303B

secondary

#75C3BD

accent

#E0D248

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #AD303B

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

Preview Lab → · Contrast checker → · Palette generator →