#A3303D#A3303D

#A3303D is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.6% C 0.150 H 18.5°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#A3303D
RGB	rgb(163, 48, 61)
HSL	hsl(353, 55%, 41%)
HSV	hsv(353, 71%, 64%)
CMYK	cmyk(0%, 70.6%, 62.6%, 36.1%)
CIE-LAB	lab(38.27, 47.82, 19.66)
CIE-LCH	lch(38.27, 51.70, 22.35°)
OKLab	oklab(48.64% 0.1424 0.0476)
OKLCH	oklch(48.64% 0.15 18.5)
XYZ	xyz(17.0052, 10.2398, 5.4950)
Luminance	0.1024 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3303D #30A396

analogous

#A33077 #A3303D #A35D30

triadic

#A3303D #3DA330 #303DA3

tetradic

#A3303D #77A330 #30A396 #5D30A3

square

#A3303D #77A330 #30A396 #5D30A3

split-complementary

#A3303D #30A35D #3077A3

monochromatic

#44141A #74222B #A3303D #C94756 #D77781

Accessibility & contrast

On white

6.89

#A3303D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#A3303D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3303D

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3303D	#FFFFFF	#000000	##FFFFFF
##A3303D	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)

#4F4B3D

Deuteranopia (green-blind)

#6C633A

Tritanopia (blue-blind)

#B31136

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a3303d;
/* rgb */ color: rgb(163, 48, 61);
/* oklch */ color: oklch(48.6% 0.150 18.5);

Tailwind

colors: {
  custom: {
    50: '#c57072',
    500: '#a3303d',
    950: '#000000',
  },
}

SCSS

$custom: #a3303d;
$custom-light: #c57072;
$custom-dark: #000000;

JSON

{
  "hex": "#a3303d",
  "rgb": {
    "r": 163,
    "g": 48,
    "b": 61
  },
  "hsl": {
    "h": 353.217,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.48643,
    "c": 0.15013,
    "h": 18.5
  },
  "luminance": 0.10237
}

Semantic roles & 50–950 ramp

primary

#A3303D

secondary

#70BFB6

accent

#DECD4A

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140808

muted

#827B7B

Preview Lab

Preview with #A3303D

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

Preview Lab → · Contrast checker → · Palette generator →