#A3363B#A3363B

#A3363B is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.3% C 0.144 H 21.6°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#A3363B
RGB	rgb(163, 54, 59)
HSL	hsl(357, 50%, 43%)
HSV	hsv(357, 67%, 64%)
CMYK	cmyk(0%, 66.9%, 63.8%, 36.1%)
CIE-LAB	lab(39.14, 45.20, 22.03)
CIE-LCH	lch(39.14, 50.29, 25.99°)
OKLab	oklab(49.29% 0.1337 0.0528)
OKLCH	oklch(49.29% 0.144 21.6)
XYZ	xyz(17.2145, 10.7430, 5.3040)
Luminance	0.1074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3363B #36A39E

analogous

#A33671 #A3363B #A36836

triadic

#A3363B #3BA336 #363BA3

tetradic

#A3363B #71A336 #36A39E #6836A3

square

#A3363B #71A336 #36A39E #6836A3

split-complementary

#A3363B #36A368 #3671A3

monochromatic

#47181A #75272A #A3363B #C55156 #D57F83

Accessibility & contrast

On white

6.67

#A3363B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#A3363B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3363B

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3363B	#FFFFFF	#000000	##FFFFFF
##A3363B	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534E3A

Deuteranopia (green-blind)

#6E6538

Tritanopia (blue-blind)

#B31D39

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a3363b;
/* rgb */ color: rgb(163, 54, 59);
/* oklch */ color: oklch(49.3% 0.144 21.6);

Tailwind

colors: {
  custom: {
    50: '#c57371',
    500: '#a3363b',
    950: '#000000',
  },
}

SCSS

$custom: #a3363b;
$custom-light: #c57371;
$custom-dark: #000000;

JSON

{
  "hex": "#a3363b",
  "rgb": {
    "r": 163,
    "g": 54,
    "b": 59
  },
  "hsl": {
    "h": 357.248,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.49285,
    "c": 0.14372,
    "h": 21.6
  },
  "luminance": 0.10741
}

Semantic roles & 50–950 ramp

primary

#A3363B

secondary

#77BEBB

accent

#DAD34E

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140807

muted

#827B7A

Preview Lab

Preview with #A3363B

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

Preview Lab → · Contrast checker → · Palette generator →