#A6303C#A6303C

#A6303C is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.1% C 0.153 H 19.3°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#A6303C
RGB	rgb(166, 48, 60)
HSL	hsl(354, 55%, 42%)
HSV	hsv(354, 71%, 65%)
CMYK	cmyk(0%, 71.1%, 63.9%, 34.9%)
CIE-LAB	lab(38.81, 48.73, 21.10)
CIE-LCH	lch(38.81, 53.10, 23.41°)
OKLab	oklab(49.14% 0.1447 0.0507)
OKLCH	oklch(49.14% 0.153 19.3)
XYZ	xyz(17.6002, 10.5497, 5.3836)
Luminance	0.1055 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A6303C #30A69A

analogous

#A63077 #A6303C #A65F30

triadic

#A6303C #3CA630 #303CA6

tetradic

#A6303C #77A630 #30A69A #5F30A6

square

#A6303C #77A630 #30A69A #5F30A6

split-complementary

#A6303C #30A65F #3077A6

monochromatic

#47151A #77222B #A6303C #CA4956 #D87882

Accessibility & contrast

On white

6.75

#A6303C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#A6303C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A6303C

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A6303C	#FFFFFF	#000000	##FFFFFF
##A6303C	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504C3C

Deuteranopia (green-blind)

#6E6539

Tritanopia (blue-blind)

#B60E35

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a6303c;
/* rgb */ color: rgb(166, 48, 60);
/* oklch */ color: oklch(49.1% 0.153 19.3);

Tailwind

colors: {
  custom: {
    50: '#c77171',
    500: '#a6303c',
    950: '#000000',
  },
}

SCSS

$custom: #a6303c;
$custom-light: #c77171;
$custom-dark: #000000;

JSON

{
  "hex": "#a6303c",
  "rgb": {
    "r": 166,
    "g": 48,
    "b": 60
  },
  "hsl": {
    "h": 353.898,
    "s": 55.14,
    "l": 41.961
  },
  "oklch": {
    "l": 0.49144,
    "c": 0.15334,
    "h": 19.3
  },
  "luminance": 0.10547
}

Semantic roles & 50–950 ramp

primary

#A6303C

secondary

#71C0B8

accent

#DECF49

background

#FDF7F6

surface

#FAEDEC

border

#D3C8C7

text

#140807

muted

#837B7A

Preview Lab

Preview with #A6303C

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

Preview Lab → · Contrast checker → · Palette generator →