Palettes / Colors / #663DEC

#663DEC — Vivid Blue

#663DEC is a blue color we call Vivid Blue, closest to the named color BlueViolet (#8A2BE2). It belongs to the blue family.

Color name

Closest CSS keyword: blueviolet (#8A2BE2) — not an exact match. CSS blueviolet gives you #8A2BE2, a different color; use #663DEC 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.

#663DEC 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 #C3EC3C; it also sits naturally between #3C6BEC and #BD3CEC. 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 40% · Green 24% · Blue 93%

Cyan 57% · Magenta 74% · Yellow 0% · Key 7%

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

Previews

CSS code for #663DEC

.text { color: #663DEC; }
.background { background-color: #663DEC; }
.border { border: 3px solid #663DEC; }
.text-rgb { color: rgb(102, 61, 236); }
.text-hsl { color: hsl(254, 82%, 58%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #663DEC; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(102, 61, 236, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #663DEC; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(102, 61, 236, 0.8); }

HTML: <p style="color:#663DEC">Text here</p> · <div style="background-color:#663DEC">Div content here</div>

Shades of #663DEC

Tints of #663DEC

Tones of #663DEC

Color harmonies

Complementary — #C3EC3C:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #663DEC: #FFFFFF.

Semi-transparent (opacity) text on #663DEC

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 #663DEC 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 #663DEC 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

← #663DEB  ·  #663DED →

Frequently asked questions

What color is #663DEC?

#663DEC is Vivid Blue, a blue color (RGB 102, 61, 236). Its closest standard named color is BlueViolet.

What is the RGB and HSL of #663DEC?

#663DEC is RGB 102, 61, 236 — HSL 254°, 82%, 58% — CMYK 57%, 74%, 0%, 7%.

What colors go with #663DEC?

Its complement is #C3EC3C; analogous partners are #3C6BEC and #BD3CEC. It also appears in 6+ palettes in our collection.

Can I use #663DEC for text?

White text on #663DEC has a contrast ratio of 6.10:1 (passes WCAG AA); black text gives 3.44:1.