#303CAF#303CAF

#303CAF is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.5% C 0.181 H 271.5°. Best body text is #FFFFFF at 8.78:1 contrast (WCAG AA passes).

Color values

HEX	#303CAF
RGB	rgb(48, 60, 175)
HSL	hsl(234, 57%, 44%)
HSV	hsv(234, 73%, 69%)
CMYK	cmyk(72.6%, 65.7%, 0%, 31.4%)
CIE-LAB	lab(31.70, 34.83, -62.57)
CIE-LCH	lch(31.70, 71.61, 299.10°)
OKLab	oklab(42.53% 0.0048 -0.1808)
OKLCH	oklch(42.53% 0.181 271.5)
XYZ	xyz(10.5700, 6.9542, 41.3344)
Luminance	0.0696 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303CAF #AFA330

analogous

#307BAF #303CAF #6330AF

triadic

#303CAF #AF303C #3CAF30

tetradic

#303CAF #AF307B #AFA330 #30AF63

square

#303CAF #AF307B #AFA330 #30AF63

split-complementary

#303CAF #AF6330 #7BAF30

monochromatic

#161B4F #232C7F #303CAF #4E5ACE #7E87DC

Accessibility & contrast

On white

8.78

#303CAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#303CAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CAF

8.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CAF	#FFFFFF	#000000	##FFFFFF
##303CAF	1.00	8.78	2.39	8.78
#FFFFFF	8.78	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B3

Deuteranopia (green-blind)

#0045AD

Tritanopia (blue-blind)

#005A70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #303caf;
/* rgb */ color: rgb(48, 60, 175);
/* oklch */ color: oklch(42.5% 0.181 271.5);

Tailwind

colors: {
  custom: {
    50: '#7b72c8',
    500: '#303caf',
    950: '#000000',
  },
}

SCSS

$custom: #303caf;
$custom-light: #7b72c8;
$custom-dark: #000000;

JSON

{
  "hex": "#303caf",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 175
  },
  "hsl": {
    "h": 234.331,
    "s": 56.951,
    "l": 43.725
  },
  "oklch": {
    "l": 0.42527,
    "c": 0.1809,
    "h": 271.5
  },
  "luminance": 0.06955
}

Semantic roles & 50–950 ramp

primary

#303CAF

secondary

#C4BD76

accent

#D248E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303CAF

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

Preview Lab → · Contrast checker → · Palette generator →