Palettes / Colors / #166BF4

#166BF4 — Vivid Blue

#166BF4 is a blue color we call Vivid Blue, closest to the named color DodgerBlue (#1E90FF). It belongs to the blue family.

Color name

Closest CSS keyword: dodgerblue (#1E90FF) — not an exact match. CSS dodgerblue gives you #1E90FF, a different color; use #166BF4 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.

#166BF4 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 #F49F15; it also sits naturally between #15DAF4 and #2F15F4. 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 42% · Blue 96%

Cyan 91% · Magenta 56% · Yellow 0% · Key 4%

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

Previews

CSS code for #166BF4

.text { color: #166BF4; }
.background { background-color: #166BF4; }
.border { border: 3px solid #166BF4; }
.text-rgb { color: rgb(22, 107, 244); }
.text-hsl { color: hsl(217, 91%, 52%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #166BF4; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(22, 107, 244, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #166BF4; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(22, 107, 244, 0.8); }

HTML: <p style="color:#166BF4">Text here</p> · <div style="background-color:#166BF4">Div content here</div>

Shades of #166BF4

Tints of #166BF4

Tones of #166BF4

Color harmonies

Complementary — #F49F15:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #166BF4: #FFFFFF.

Semi-transparent (opacity) text on #166BF4

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 #166BF4 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 #166BF4 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

← #166BF3  ·  #166BF5 →

Frequently asked questions

What color is #166BF4?

#166BF4 is Vivid Blue, a blue color (RGB 22, 107, 244). Its closest standard named color is DodgerBlue.

What is the RGB and HSL of #166BF4?

#166BF4 is RGB 22, 107, 244 — HSL 217°, 91%, 52% — CMYK 91%, 56%, 0%, 4%.

What colors go with #166BF4?

Its complement is #F49F15; analogous partners are #15DAF4 and #2F15F4. It also appears in 6+ palettes in our collection.

Can I use #166BF4 for text?

White text on #166BF4 has a contrast ratio of 4.73:1 (passes WCAG AA); black text gives 4.44:1.