Palettes / Colors / #173AEE

#173AEE — Vivid Blue

#173AEE is a blue color we call Vivid Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

#173AEE 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 #EECA17; it also sits naturally between #17A6EE and #5E17EE. 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 23% · Blue 93%

Cyan 90% · Magenta 76% · Yellow 0% · Key 7%

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

Previews

CSS code for #173AEE

.text { color: #173AEE; }
.background { background-color: #173AEE; }
.border { border: 3px solid #173AEE; }
.text-rgb { color: rgb(23, 58, 238); }
.text-hsl { color: hsl(230, 86%, 51%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #173AEE; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(23, 58, 238, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #173AEE; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(23, 58, 238, 0.8); }

HTML: <p style="color:#173AEE">Text here</p> · <div style="background-color:#173AEE">Div content here</div>

Shades of #173AEE

Tints of #173AEE

Tones of #173AEE

Color harmonies

Complementary — #EECA17:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #173AEE: #FFFFFF.

How #173AEE 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 #173AEE 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

← #173AED  ·  #173AEF →

Frequently asked questions

What color is #173AEE?

#173AEE is Vivid Blue, a blue color (RGB 23, 58, 238). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #173AEE?

#173AEE is RGB 23, 58, 238 — HSL 230°, 86%, 51% — CMYK 90%, 76%, 0%, 7%.

What colors go with #173AEE?

Its complement is #EECA17; analogous partners are #17A6EE and #5E17EE. It also appears in 6+ palettes in our collection.

Can I use #173AEE for text?

White text on #173AEE has a contrast ratio of 7.30:1 (passes WCAG AA); black text gives 2.88:1.