Palettes / Colors / #428EEB

#428EEB — Vivid Blue

#428EEB is a blue color we call Vivid Blue, closest to the named color CornflowerBlue (#6495ED). It belongs to the blue family.

Color name

Closest CSS keyword: cornflowerblue (#6495ED) — not an exact match. CSS cornflowerblue gives you #6495ED, a different color; use #428EEB when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#428EEB is a cool blue color associated with trust, calm and professionalism. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #EB9F42; it also sits naturally between #42E3EB and #4A42EB. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 26% · Green 56% · Blue 92%

Cyan 72% · Magenta 40% · Yellow 0% · Key 8%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #428EEB

.text { color: #428EEB; }
.background { background-color: #428EEB; }
.border { border: 3px solid #428EEB; }
.text-rgb { color: rgb(66, 142, 235); }
.text-hsl { color: hsl(213, 81%, 59%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #428EEB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(66, 142, 235, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #428EEB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(66, 142, 235, 0.8); }

HTML: <p style="color:#428EEB">Text here</p> · <div style="background-color:#428EEB">Div content here</div>

Shades of #428EEB

Tints of #428EEB

Tones of #428EEB

Color harmonies

Complementary — #EB9F42:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #428EEB: #000000.

Semi-transparent (opacity) text on #428EEB

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #428EEB looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #428EEB rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #428EEA  ·  #428EEC →

Frequently asked questions

What color is #428EEB?

#428EEB is Vivid Blue, a blue color (RGB 66, 142, 235). Its closest standard named color is CornflowerBlue.

What is the RGB and HSL of #428EEB?

#428EEB is RGB 66, 142, 235 — HSL 213°, 81%, 59% — CMYK 72%, 40%, 0%, 8%.

What colors go with #428EEB?

Its complement is #EB9F42; analogous partners are #42E3EB and #4A42EB. It also appears in 6+ palettes in our collection.

Can I use #428EEB for text?

Black text on #428EEB has a contrast ratio of 6.30:1 (passes WCAG AA); white text gives 3.33:1.