#A6303A#A6303A

#A6303A is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.1% C 0.153 H 20.3°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#A6303A
RGB	rgb(166, 48, 58)
HSL	hsl(355, 55%, 42%)
HSV	hsv(355, 71%, 65%)
CMYK	cmyk(0%, 71.1%, 65.1%, 34.9%)
CIE-LAB	lab(38.78, 48.61, 22.30)
CIE-LCH	lch(38.78, 53.48, 24.64°)
OKLab	oklab(49.11% 0.1439 0.0532)
OKLCH	oklch(49.11% 0.153 20.3)
XYZ	xyz(17.5484, 10.5289, 5.1104)
Luminance	0.1053 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6303A #30A69C

analogous

#A63075 #A6303A #A66130

triadic

#A6303A #3AA630 #303AA6

tetradic

#A6303A #75A630 #30A69C #6130A6

square

#A6303A #75A630 #30A69C #6130A6

split-complementary

#A6303A #30A661 #3075A6

monochromatic

#471519 #772229 #A6303A #CA4954 #D87880

Accessibility & contrast

On white

6.76

#A6303A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#A6303A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6303A

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6303A	#FFFFFF	#000000	##FFFFFF
##A6303A	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504B39

Deuteranopia (green-blind)

#6E6437

Tritanopia (blue-blind)

#B60D35

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a6303a;
/* rgb */ color: rgb(166, 48, 58);
/* oklch */ color: oklch(49.1% 0.153 20.3);

Tailwind

colors: {
  custom: {
    50: '#c77170',
    500: '#a6303a',
    950: '#000000',
  },
}

SCSS

$custom: #a6303a;
$custom-light: #c77170;
$custom-dark: #000000;

JSON

{
  "hex": "#a6303a",
  "rgb": {
    "r": 166,
    "g": 48,
    "b": 58
  },
  "hsl": {
    "h": 354.915,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.49106,
    "c": 0.15344,
    "h": 20.3
  },
  "luminance": 0.10526
}

Semantic roles & 50–950 ramp

primary

#A6303A

secondary

#71C0BA

accent

#DED249

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A6303A

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

Preview Lab → · Contrast checker → · Palette generator →