HEX Color Code #4290DD

From card backgrounds to icon fills, the medium blue tone #4290DD handles a wide variety of design contexts reliably. This reference page provides its complete color data and professional application ideas.

What Color Is #4290DD?

In the HSL model, #4290DD is defined as (210°, 70%, 56%). The 210° hue angle corresponds directly to the blue portion of the color wheel. Combined with medium lightness and strong saturation, this shade delivers vibrant visual impact.

Color Meaning of #4290DD

From a psychological standpoint, #4290DD taps into blue associations of serenity, intelligence, and authority. The medium character of this specific shade means it asserts presence without overwhelming, making it effective for primary UI elements and brand identifiers.

Where to Use HEX Code #4290DD

E-commerce product card borders and "add to cart" button styling for blue-branded storefronts

Modal overlay tints — applying #4290DD at 10-20% opacity creates depth behind dialog content

Infographic accent elements where multiple blue shades build visual storytelling layers

Notification badges that remain legible against varied nav-bar backgrounds

Event and calendar UI — medium blue marks selected dates and active time slots

Slide deck title bars and presentation themes for consistent conference branding

Similar HEX Color Codes

#3381CE

#2977F6

#656DFF

Complementary blue tone for palette coordination

#1563FF

Nearby color value offering slightly different brightness

#79C7FF

#014F9C

Adjacent shade useful for gradient transitions

#8D4592

Comparable purple alternative with distinct character

HEX Code #4290DD in Design Systems

For Figma and code handoff, document #4290DD with its roles: when to use it, which backgrounds it pairs with, and which text colors sit on top of it. Include a "do / don't" section showing approved and forbidden combinations — this prevents designers from accidentally creating inaccessible pairs.

With brightness at 129/255, layer it behind dark text for comfortable reading. It also works as a tinted background that softens a white-heavy layout without introducing visual heaviness.

FAQ About HEX Color Code #4290DD

What color is #4290DD?

Visually, #4290DD appears as medium blue. At HSL(210°, 70%, 56%), the hue sits in the blue zone with strong saturation and medium brightness.

Is #4290DD a dark or light color?

Based on WCAG luminance weighting, #4290DD scores 129/255 — classifying it as light. Use it for backgrounds and decorative elements, pairing with dark foreground colors..

What colors go well with #4290DD?

Try combining #4290DD with shades at 30° (complementary) for bold contrast, 330° and 90° (triadic) for balanced variety, or simply lighter and darker blue values for monochromatic elegance. Use our color wheel to explore these relationships visually.

Can I use #4290DD for branding?

Yes, #4290DD works effectively for branding. The blue family communicates stability, depth, and confidence, and its medium character adds distinctiveness. Pair it with comprehensive brand guidelines specifying approved backgrounds, text treatments, and co-branding rules.

How do I convert #4290DD to other color formats?

#4290DD equals RGB(66, 144, 221) and HSL(210°, 70%, 56%). Each format serves different purposes: HEX for CSS tokens, RGB for JavaScript manipulation, and HSL for intuitive color adjustments. Our conversion tools provide all formats with one click.