#303CAE#303CAE

#303CAE is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.4% C 0.180 H 271.5°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#303CAE
RGB	rgb(48, 60, 174)
HSL	hsl(234, 57%, 44%)
HSV	hsv(234, 72%, 68%)
CMYK	cmyk(72.4%, 65.5%, 0%, 31.8%)
CIE-LAB	lab(31.61, 34.47, -62.12)
CIE-LCH	lch(31.61, 71.04, 299.03°)
OKLab	oklab(42.43% 0.0049 -0.1795)
OKLCH	oklch(42.43% 0.18 271.5)
XYZ	xyz(10.4722, 6.9150, 40.8190)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.95

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#303CAE #AEA230

analogous

#307BAE #303CAE #6330AE

triadic

#303CAE #AE303C #3CAE30

tetradic

#303CAE #AE307B #AEA230 #30AE63

square

#303CAE #AE307B #AEA230 #30AE63

split-complementary

#303CAE #AE6330 #7BAE30

monochromatic

#161B4E #232B7E #303CAE #4D59CE #7D86DB

Accessibility & contrast

On white

8.81

#303CAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#303CAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303CAE

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303CAE	#FFFFFF	#000000	##FFFFFF
##303CAE	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0045AC

Tritanopia (blue-blind)

#005A6F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303cae;
/* rgb */ color: rgb(48, 60, 174);
/* oklch */ color: oklch(42.4% 0.180 271.5);

Tailwind

colors: {
  custom: {
    50: '#7b72c7',
    500: '#303cae',
    950: '#000000',
  },
}

SCSS

$custom: #303cae;
$custom-light: #7b72c7;
$custom-dark: #000000;

JSON

{
  "hex": "#303cae",
  "rgb": {
    "r": 48,
    "g": 60,
    "b": 174
  },
  "hsl": {
    "h": 234.286,
    "s": 56.757,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42434,
    "c": 0.17959,
    "h": 271.5
  },
  "luminance": 0.06916
}

Semantic roles & 50–950 ramp

primary

#303CAE

secondary

#C4BC76

accent

#D248E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303CAE

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

Preview Lab → · Contrast checker → · Palette generator →