Palettes / Colors / #173DFD

#173DFD — Vivid Blue

#173DFD is a blue color we call Vivid Blue, closest to the named color Blue (#0000FF). It belongs to the blue family.

Color name

Closest CSS keyword: blue (#0000FF) — not an exact match. CSS blue gives you #0000FF, a different color; use #173DFD 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.

#173DFD 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 #FDD617; it also sits naturally between #17B0FD and #6317FD. 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 24% · Blue 99%

Cyan 91% · Magenta 76% · Yellow 0% · Key 1%

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

Previews

CSS code for #173DFD

.text { color: #173DFD; }
.background { background-color: #173DFD; }
.border { border: 3px solid #173DFD; }
.text-rgb { color: rgb(23, 61, 253); }
.text-hsl { color: hsl(230, 98%, 54%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #173DFD; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(23, 61, 253, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #173DFD; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(23, 61, 253, 0.8); }

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

Shades of #173DFD

Tints of #173DFD

Tones of #173DFD

Color harmonies

Complementary — #FDD617:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #173DFD: #FFFFFF.

Semi-transparent (opacity) text on #173DFD

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 #173DFD 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 #173DFD 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

← #173DFC  ·  #173DFE →

Frequently asked questions

What color is #173DFD?

#173DFD is Vivid Blue, a blue color (RGB 23, 61, 253). Its closest standard named color is Blue.

What is the RGB and HSL of #173DFD?

#173DFD is RGB 23, 61, 253 — HSL 230°, 98%, 54% — CMYK 91%, 76%, 0%, 1%.

What colors go with #173DFD?

Its complement is #FDD617; analogous partners are #17B0FD and #6317FD. It also appears in 6+ palettes in our collection.

Can I use #173DFD for text?

White text on #173DFD has a contrast ratio of 6.73:1 (passes WCAG AA); black text gives 3.12:1.