Palettes / Colors / #1663D0

#1663D0 — Vivid Blue

#1663D0 is a blue color we call Vivid Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

Color name

Closest CSS keyword: royalblue (#4169E1) — not an exact match. CSS royalblue gives you #4169E1, a different color; use #1663D0 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.

#1663D0 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 #D08216; it also sits naturally between #16C0D0 and #2516D0. 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 9% · Green 39% · Blue 82%

Cyan 89% · Magenta 52% · Yellow 0% · Key 18%

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

Previews

CSS code for #1663D0

.text { color: #1663D0; }
.background { background-color: #1663D0; }
.border { border: 3px solid #1663D0; }
.text-rgb { color: rgb(22, 99, 208); }
.text-hsl { color: hsl(215, 81%, 45%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #1663D0; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(22, 99, 208, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #1663D0; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(22, 99, 208, 0.8); }

HTML: <p style="color:#1663D0">Text here</p> · <div style="background-color:#1663D0">Div content here</div>

Shades of #1663D0

Tints of #1663D0

Tones of #1663D0

Color harmonies

Complementary — #D08216:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #1663D0: #FFFFFF.

Semi-transparent (opacity) text on #1663D0

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 #1663D0 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 #1663D0 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

← #1663CF  ·  #1663D1 →

Frequently asked questions

What color is #1663D0?

#1663D0 is Vivid Blue, a blue color (RGB 22, 99, 208). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #1663D0?

#1663D0 is RGB 22, 99, 208 — HSL 215°, 81%, 45% — CMYK 89%, 52%, 0%, 18%.

What colors go with #1663D0?

Its complement is #D08216; analogous partners are #16C0D0 and #2516D0. It also appears in 6+ palettes in our collection.

Can I use #1663D0 for text?

White text on #1663D0 has a contrast ratio of 5.63:1 (passes WCAG AA); black text gives 3.73:1.