Palettes / Colors / #424CFF

#424CFF — Vivid Blue

#424CFF is a blue color we call Vivid Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

#424CFF 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 #FFF642; it also sits naturally between #42AAFF and #9742FF. 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 26% · Green 30% · Blue 100%

Cyan 74% · Magenta 70% · Yellow 0% · Key 0%

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

Previews

CSS code for #424CFF

.text { color: #424CFF; }
.background { background-color: #424CFF; }
.border { border: 3px solid #424CFF; }
.text-rgb { color: rgb(66, 76, 255); }
.text-hsl { color: hsl(237, 100%, 63%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #424CFF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(66, 76, 255, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #424CFF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(66, 76, 255, 0.8); }

HTML: <p style="color:#424CFF">Text here</p> · <div style="background-color:#424CFF">Div content here</div>

Shades of #424CFF

Tints of #424CFF

Tones of #424CFF

Color harmonies

Complementary — #FFF642:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #424CFF: #FFFFFF.

How #424CFF 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 #424CFF 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

← #424CFE  ·  #424D00 →

Frequently asked questions

What color is #424CFF?

#424CFF is Vivid Blue, a blue color (RGB 66, 76, 255). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #424CFF?

#424CFF is RGB 66, 76, 255 — HSL 237°, 100%, 63% — CMYK 74%, 70%, 0%, 0%.

What colors go with #424CFF?

Its complement is #FFF642; analogous partners are #42AAFF and #9742FF. It also appears in 6+ palettes in our collection.

Can I use #424CFF for text?

White text on #424CFF has a contrast ratio of 5.66:1 (passes WCAG AA); black text gives 3.71:1.