#A3363A#A3363A

#A3363A is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.3% C 0.144 H 22.1°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#A3363A
RGB	rgb(163, 54, 58)
HSL	hsl(358, 50%, 43%)
HSV	hsv(358, 67%, 64%)
CMYK	cmyk(0%, 66.9%, 64.4%, 36.1%)
CIE-LAB	lab(39.13, 45.14, 22.63)
CIE-LCH	lch(39.13, 50.49, 26.63°)
OKLab	oklab(49.27% 0.1333 0.0541)
OKLCH	oklch(49.27% 0.144 22.1)
XYZ	xyz(17.1889, 10.7327, 5.1687)
Luminance	0.1073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3363A #36A39F

analogous

#A33671 #A3363A #A36836

triadic

#A3363A #3AA336 #363AA3

tetradic

#A3363A #71A336 #36A39F #6836A3

square

#A3363A #71A336 #36A39F #6836A3

split-complementary

#A3363A #36A368 #3671A3

monochromatic

#471819 #75272A #A3363A #C55155 #D57F82

Accessibility & contrast

On white

6.68

#A3363A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A3363A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3363A

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3363A	#FFFFFF	#000000	##FFFFFF
##A3363A	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534D39

Deuteranopia (green-blind)

#6E6537

Tritanopia (blue-blind)

#B31C38

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a3363a;
/* rgb */ color: rgb(163, 54, 58);
/* oklch */ color: oklch(49.3% 0.144 22.1);

Tailwind

colors: {
  custom: {
    50: '#c57370',
    500: '#a3363a',
    950: '#000000',
  },
}

SCSS

$custom: #a3363a;
$custom-light: #c57370;
$custom-dark: #000000;

JSON

{
  "hex": "#a3363a",
  "rgb": {
    "r": 163,
    "g": 54,
    "b": 58
  },
  "hsl": {
    "h": 357.798,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.49266,
    "c": 0.14381,
    "h": 22.1
  },
  "luminance": 0.1073
}

Semantic roles & 50–950 ramp

primary

#A3363A

secondary

#77BEBB

accent

#DAD54E

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140807

muted

#827B7A

Preview Lab

Preview with #A3363A

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

Preview Lab → · Contrast checker → · Palette generator →