#303EB4#303EB4

#303EB4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.3% C 0.185 H 271.0°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#303EB4
RGB	rgb(48, 62, 180)
HSL	hsl(234, 58%, 45%)
HSV	hsv(234, 73%, 71%)
CMYK	cmyk(73.3%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(32.63, 35.35, -64.02)
CIE-LCH	lch(32.63, 73.13, 298.91°)
OKLab	oklab(43.34% 0.0031 -0.1851)
OKLCH	oklch(43.34% 0.185 271)
XYZ	xyz(11.1770, 7.3678, 44.0042)
Luminance	0.0737 (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

#303EB4 #B4A630

analogous

#3080B4 #303EB4 #6430B4

triadic

#303EB4 #B4303E #3EB430

tetradic

#303EB4 #B43080 #B4A630 #30B464

square

#303EB4 #B43080 #B4A630 #30B464

split-complementary

#303EB4 #B46430 #80B430

monochromatic

#161D53 #232D84 #303EB4 #515ED1 #818BDD

Accessibility & contrast

On white

8.49

#303EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#303EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #303EB4

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##303EB4	#FFFFFF	#000000	##FFFFFF
##303EB4	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #303eb4;
/* rgb */ color: rgb(48, 62, 180);
/* oklch */ color: oklch(43.3% 0.185 271.0);

Tailwind

colors: {
  custom: {
    50: '#7c73cb',
    500: '#303eb4',
    950: '#000000',
  },
}

SCSS

$custom: #303eb4;
$custom-light: #7c73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#303eb4",
  "rgb": {
    "r": 48,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 233.636,
    "s": 57.895,
    "l": 44.706
  },
  "oklch": {
    "l": 0.43343,
    "c": 0.18511,
    "h": 271
  },
  "luminance": 0.07369
}

Semantic roles & 50–950 ramp

primary

#303EB4

secondary

#C6BE79

accent

#D147E1

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #303EB4

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

Preview Lab → · Contrast checker → · Palette generator →