#303BAE#303BAE

#303BAE is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.3% C 0.181 H 271.7°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#303BAE
RGB	rgb(48, 59, 174)
HSL	hsl(235, 57%, 44%)
HSV	hsv(235, 72%, 68%)
CMYK	cmyk(72.4%, 66.1%, 0%, 31.8%)
CIE-LAB	lab(31.37, 35.11, -62.51)
CIE-LCH	lch(31.37, 71.70, 299.32°)
OKLab	oklab(42.26% 0.0055 -0.1807)
OKLCH	oklch(42.26% 0.181 271.7)
XYZ	xyz(10.4203, 6.8112, 40.8017)
Luminance	0.0681 (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

#303BAE #AEA330

analogous

#307AAE #303BAE #6430AE

triadic

#303BAE #AE303B #3BAE30

tetradic

#303BAE #AE307A #AEA330 #30AE64

square

#303BAE #AE307A #AEA330 #30AE64

split-complementary

#303BAE #AE6430 #7AAE30

monochromatic

#161A4E #232B7E #303BAE #4D58CE #7D85DB

Accessibility & contrast

On white

8.89

#303BAE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#303BAE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303BAE

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303BAE	#FFFFFF	#000000	##FFFFFF
##303BAE	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B2

Deuteranopia (green-blind)

#0044AC

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #303bae;
/* rgb */ color: rgb(48, 59, 174);
/* oklch */ color: oklch(42.3% 0.181 271.7);

Tailwind

colors: {
  custom: {
    50: '#7b71c7',
    500: '#303bae',
    950: '#000000',
  },
}

SCSS

$custom: #303bae;
$custom-light: #7b71c7;
$custom-dark: #000000;

JSON

{
  "hex": "#303bae",
  "rgb": {
    "r": 48,
    "g": 59,
    "b": 174
  },
  "hsl": {
    "h": 234.762,
    "s": 56.757,
    "l": 43.529
  },
  "oklch": {
    "l": 0.42259,
    "c": 0.18076,
    "h": 271.7
  },
  "luminance": 0.06812
}

Semantic roles & 50–950 ramp

primary

#303BAE

secondary

#C4BD76

accent

#D348E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #303BAE

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

Preview Lab → · Contrast checker → · Palette generator →