#303DAC#303DAC

#303DAC is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.176 H 271.4°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#303DAC
RGB	rgb(48, 61, 172)
HSL	hsl(234, 56%, 43%)
HSV	hsv(234, 72%, 67%)
CMYK	cmyk(72.1%, 64.5%, 0%, 32.5%)
CIE-LAB	lab(31.68, 33.12, -60.82)
CIE-LCH	lch(31.68, 69.25, 298.57°)
OKLab	oklab(42.43% 0.0043 -0.1757)
OKLCH	oklch(42.43% 0.176 271.4)
XYZ	xyz(10.3315, 6.9434, 39.8174)
Luminance	0.0694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303DAC #AC9F30

analogous

#307BAC #303DAC #6130AC

triadic

#303DAC #AC303D #3DAC30

tetradic

#303DAC #AC307B #AC9F30 #30AC61

square

#303DAC #AC307B #AC9F30 #30AC61

split-complementary

#303DAC #AC6130 #7BAC30

monochromatic

#151B4C #232C7C #303DAC #4C5ACD #7C86DA

Accessibility & contrast

On white

8.79

#303DAC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#303DAC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303DAC

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303DAC	#FFFFFF	#000000	##FFFFFF
##303DAC	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B0

Deuteranopia (green-blind)

#0045AA

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303dac;
/* rgb */ color: rgb(48, 61, 172);
/* oklch */ color: oklch(42.4% 0.176 271.4);

Tailwind

colors: {
  custom: {
    50: '#7a72c6',
    500: '#303dac',
    950: '#000000',
  },
}

SCSS

$custom: #303dac;
$custom-light: #7a72c6;
$custom-dark: #000000;

JSON

{
  "hex": "#303dac",
  "rgb": {
    "r": 48,
    "g": 61,
    "b": 172
  },
  "hsl": {
    "h": 233.71,
    "s": 56.364,
    "l": 43.137
  },
  "oklch": {
    "l": 0.42427,
    "c": 0.17576,
    "h": 271.4
  },
  "luminance": 0.06944
}

Semantic roles & 50–950 ramp

primary

#303DAC

secondary

#C3BB75

accent

#D048E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303DAC

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

Preview Lab → · Contrast checker → · Palette generator →