#A3303E#A3303E

#A3303E is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.7% C 0.150 H 18.0°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#A3303E
RGB	rgb(163, 48, 62)
HSL	hsl(353, 55%, 41%)
HSV	hsv(353, 71%, 64%)
CMYK	cmyk(0%, 70.6%, 62%, 36.1%)
CIE-LAB	lab(38.29, 47.89, 19.05)
CIE-LCH	lch(38.29, 51.54, 21.70°)
OKLab	oklab(48.66% 0.1428 0.0463)
OKLCH	oklch(48.66% 0.15 18)
XYZ	xyz(17.0324, 10.2506, 5.6382)
Luminance	0.1025 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3303E #30A395

analogous

#A33078 #A3303E #A35C30

triadic

#A3303E #3EA330 #303EA3

tetradic

#A3303E #78A330 #30A395 #5C30A3

square

#A3303E #78A330 #30A395 #5C30A3

split-complementary

#A3303E #30A35C #3078A3

monochromatic

#44141A #74222C #A3303E #C94757 #D77782

Accessibility & contrast

On white

6.89

#A3303E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#A3303E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3303E

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3303E	#FFFFFF	#000000	##FFFFFF
##A3303E	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4B3E

Deuteranopia (green-blind)

#6C633B

Tritanopia (blue-blind)

#B31236

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a3303e;
/* rgb */ color: rgb(163, 48, 62);
/* oklch */ color: oklch(48.7% 0.150 18.0);

Tailwind

colors: {
  custom: {
    50: '#c57073',
    500: '#a3303e',
    950: '#000000',
  },
}

SCSS

$custom: #a3303e;
$custom-light: #c57073;
$custom-dark: #000000;

JSON

{
  "hex": "#a3303e",
  "rgb": {
    "r": 163,
    "g": 48,
    "b": 62
  },
  "hsl": {
    "h": 352.696,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.48664,
    "c": 0.1501,
    "h": 18
  },
  "luminance": 0.10248
}

Semantic roles & 50–950 ramp

primary

#A3303E

secondary

#70BFB5

accent

#DECC4A

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140808

muted

#827B7B

Preview Lab

Preview with #A3303E

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

Preview Lab → · Contrast checker → · Palette generator →