Palettes / Colors / #306EF3

#306EF3 — Vivid Blue

#306EF3 is a blue color we call Vivid Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

#306EF3 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 #F3B530; it also sits naturally between #30CFF3 and #5430F3. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 19% · Green 43% · Blue 95%

Cyan 80% · Magenta 55% · Yellow 0% · Key 5%

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

Previews

CSS code for #306EF3

.text { color: #306EF3; }
.background { background-color: #306EF3; }
.border { border: 3px solid #306EF3; }
.text-rgb { color: rgb(48, 110, 243); }
.text-hsl { color: hsl(221, 89%, 57%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #306EF3; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(48, 110, 243, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #306EF3; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(48, 110, 243, 0.8); }

HTML: <p style="color:#306EF3">Text here</p> · <div style="background-color:#306EF3">Div content here</div>

Shades of #306EF3

Tints of #306EF3

Tones of #306EF3

Color harmonies

Complementary — #F3B530:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #306EF3: #000000.

How #306EF3 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 #306EF3 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

← #306EF2  ·  #306EF4 →

Frequently asked questions

What color is #306EF3?

#306EF3 is Vivid Blue, a blue color (RGB 48, 110, 243). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #306EF3?

#306EF3 is RGB 48, 110, 243 — HSL 221°, 89%, 57% — CMYK 80%, 55%, 0%, 5%.

What colors go with #306EF3?

Its complement is #F3B530; analogous partners are #30CFF3 and #5430F3. It also appears in 6+ palettes in our collection.

Can I use #306EF3 for text?

Black text on #306EF3 has a contrast ratio of 4.65:1 (passes WCAG AA); white text gives 4.52:1.