Palettes / Colors / #00A4DD

#00A4DD — Vivid Blue

#00A4DD is a blue color we call Vivid Blue, closest to the named color DeepSkyBlue (#00BFFF). It belongs to the blue family.

Color name

Closest CSS keyword: deepskyblue (#00BFFF) — not an exact match. CSS deepskyblue gives you #00BFFF, a different color; use #00A4DD 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.

#00A4DD 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 #DB3700; it also sits naturally between #00DBA4 and #0037DB. 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 0% · Green 64% · Blue 87%

Cyan 100% · Magenta 26% · Yellow 0% · Key 13%

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

Previews

CSS code for #00A4DD

.text { color: #00A4DD; }
.background { background-color: #00A4DD; }
.border { border: 3px solid #00A4DD; }
.text-rgb { color: rgb(0, 164, 221); }
.text-hsl { color: hsl(195, 100%, 43%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #00A4DD; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(0, 164, 221, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #00A4DD; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(0, 164, 221, 0.8); }

HTML: <p style="color:#00A4DD">Text here</p> · <div style="background-color:#00A4DD">Div content here</div>

Shades of #00A4DD

Tints of #00A4DD

Tones of #00A4DD

Color harmonies

Complementary — #DB3700:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #00A4DD: #000000.

Semi-transparent (opacity) text on #00A4DD

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 #00A4DD 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 #00A4DD 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

← #00A4DC  ·  #00A4DE →

Frequently asked questions

What color is #00A4DD?

#00A4DD is Vivid Blue, a blue color (RGB 0, 164, 221). Its closest standard named color is DeepSkyBlue.

What is the RGB and HSL of #00A4DD?

#00A4DD is RGB 0, 164, 221 — HSL 195°, 100%, 43% — CMYK 100%, 26%, 0%, 13%.

What colors go with #00A4DD?

Its complement is #DB3700; analogous partners are #00DBA4 and #0037DB. It also appears in 6+ palettes in our collection.

Can I use #00A4DD for text?

Black text on #00A4DD has a contrast ratio of 7.35:1 (passes WCAG AA); white text gives 2.86:1.