#303FAC#303FAC

#303FAC is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.173 H 271.0°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#303FAC
RGB	rgb(48, 63, 172)
HSL	hsl(233, 56%, 43%)
HSV	hsv(233, 72%, 67%)
CMYK	cmyk(72.1%, 63.4%, 0%, 32.5%)
CIE-LAB	lab(32.17, 31.83, -60.01)
CIE-LCH	lch(32.17, 67.93, 297.94°)
OKLab	oklab(42.79% 0.0029 -0.1733)
OKLCH	oklch(42.79% 0.173 271)
XYZ	xyz(10.4403, 7.1609, 39.8537)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.42

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303FAC #AC9D30

analogous

#307DAC #303FAC #5F30AC

triadic

#303FAC #AC303F #3FAC30

tetradic

#303FAC #AC307D #AC9D30 #30AC5F

square

#303FAC #AC307D #AC9D30 #30AC5F

split-complementary

#303FAC #AC5F30 #7DAC30

monochromatic

#151C4C #232D7C #303FAC #4C5CCD #7C87DA

Accessibility & contrast

On white

8.63

#303FAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#303FAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303FAC

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303FAC	#FFFFFF	#000000	##FFFFFF
##303FAC	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B0

Deuteranopia (green-blind)

#0046AA

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #303fac;
/* rgb */ color: rgb(48, 63, 172);
/* oklch */ color: oklch(42.8% 0.173 271.0);

Tailwind

colors: {
  custom: {
    50: '#7a74c6',
    500: '#303fac',
    950: '#000000',
  },
}

SCSS

$custom: #303fac;
$custom-light: #7a74c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303fac",
  "rgb": {
    "r": 48,
    "g": 63,
    "b": 172
  },
  "hsl": {
    "h": 232.742,
    "s": 56.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42789,
    "c": 0.17335,
    "h": 271
  },
  "luminance": 0.07162
}

Semantic roles & 50–950 ramp

primary

#303FAC

secondary

#C3BA75

accent

#CD48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303FAC

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

Preview Lab → · Contrast checker → · Palette generator →