#333399 is a medium, strong blue. The closest CSS named color is Dark Slate Blue (#483d8b). In RGB it is rgb(51, 51, 153); in HSL, hsl(240, 50%, 40%).
| Hex | #333399 |
|---|---|
| RGB | rgb(51, 51, 153) |
| HSL | hsl(240, 50%, 40%) |
| CMYK | 67%, 67%, 0%, 40% |
| CSS example | color: #333399; background-color: rgb(51, 51, 153); |
The hue stepped through seven lightness levels, each matched to the closest named or web-safe color — useful for backgrounds, borders, text and hover states that all belong to one family. Click any swatch for its full breakdown.
Complementary — maximum contrast, from opposite sides of the color wheel:
Analogous — neighbours on the wheel, naturally harmonious:
Triadic — three colors evenly spaced for balanced variety:
Tetradic — four colors at 90° intervals:
On a #333399 background, white text gives the better contrast. WCAG requires 4.5:1 for normal text and 3:1 for large text (AA), or 7:1 and 4.5:1 for AAA.
| Text color | Contrast ratio | Normal text | Large text |
|---|---|---|---|
| White text (#ffffff) | 10.12:1 | AAA | AAA |
| Black text (#000000) | 2.07:1 | Fails | Fails |
The CSS named colors closest to #333399:
Turn #333399 into a full scheme with the Color Palette Generator, blend it into a background with the CSS Gradient Generator, or browse all named colors.