#A3303C#A3303C

#A3303C is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.6% C 0.150 H 19.0°. Best body text is #FFFFFF at 6.90:1 contrast (WCAG AA passes).

Color values

HEX	#A3303C
RGB	rgb(163, 48, 60)
HSL	hsl(354, 55%, 41%)
HSV	hsv(354, 71%, 64%)
CMYK	cmyk(0%, 70.6%, 63.2%, 36.1%)
CIE-LAB	lab(38.25, 47.76, 20.26)
CIE-LCH	lch(38.25, 51.88, 22.99°)
OKLab	oklab(48.62% 0.142 0.0489)
OKLCH	oklch(48.62% 0.15 19)
XYZ	xyz(16.9785, 10.2291, 5.3545)
Luminance	0.1023 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A3303C #30A397

analogous

#A33076 #A3303C #A35E30

triadic

#A3303C #3CA330 #303CA3

tetradic

#A3303C #76A330 #30A397 #5E30A3

square

#A3303C #76A330 #30A397 #5E30A3

split-complementary

#A3303C #30A35E #3076A3

monochromatic

#441419 #74222B #A3303C #C94755 #D77781

Accessibility & contrast

On white

6.90

#A3303C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#A3303C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A3303C

6.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A3303C	#FFFFFF	#000000	##FFFFFF
##A3303C	1.00	6.90	3.05	6.90
#FFFFFF	6.90	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4B3C

Deuteranopia (green-blind)

#6C6339

Tritanopia (blue-blind)

#B31135

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #a3303c;
/* rgb */ color: rgb(163, 48, 60);
/* oklch */ color: oklch(48.6% 0.150 19.0);

Tailwind

colors: {
  custom: {
    50: '#c57071',
    500: '#a3303c',
    950: '#000000',
  },
}

SCSS

$custom: #a3303c;
$custom-light: #c57071;
$custom-dark: #000000;

JSON

{
  "hex": "#a3303c",
  "rgb": {
    "r": 163,
    "g": 48,
    "b": 60
  },
  "hsl": {
    "h": 353.739,
    "s": 54.502,
    "l": 41.373
  },
  "oklch": {
    "l": 0.48623,
    "c": 0.15015,
    "h": 19
  },
  "luminance": 0.10227
}

Semantic roles & 50–950 ramp

primary

#A3303C

secondary

#70BFB7

accent

#DECE4A

background

#FCF7F6

surface

#F9EDEC

border

#D2C8C7

text

#140807

muted

#827B7A

Preview Lab

Preview with #A3303C

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

Preview Lab → · Contrast checker → · Palette generator →