Palettes / Colors / #18BBFF

#18BBFF — Vivid Blue

#18BBFF 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 #18BBFF 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.

#18BBFF 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 #FF5E1A; it also sits naturally between #1AFFD1 and #1A47FF. 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 73% · Blue 100%

Cyan 91% · Magenta 27% · Yellow 0% · Key 0%

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

Previews

CSS code for #18BBFF

.text { color: #18BBFF; }
.background { background-color: #18BBFF; }
.border { border: 3px solid #18BBFF; }
.text-rgb { color: rgb(24, 187, 255); }
.text-hsl { color: hsl(198, 100%, 55%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #18BBFF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(24, 187, 255, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #18BBFF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(24, 187, 255, 0.8); }

HTML: <p style="color:#18BBFF">Text here</p> · <div style="background-color:#18BBFF">Div content here</div>

Shades of #18BBFF

Tints of #18BBFF

Tones of #18BBFF

Color harmonies

Complementary — #FF5E1A:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #18BBFF: #000000.

Semi-transparent (opacity) text on #18BBFF

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 #18BBFF 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 #18BBFF 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

← #18BBFE  ·  #18BC00 →

Frequently asked questions

What color is #18BBFF?

#18BBFF is Vivid Blue, a blue color (RGB 24, 187, 255). Its closest standard named color is DeepSkyBlue.

What is the RGB and HSL of #18BBFF?

#18BBFF is RGB 24, 187, 255 — HSL 198°, 100%, 55% — CMYK 91%, 27%, 0%, 0%.

What colors go with #18BBFF?

Its complement is #FF5E1A; analogous partners are #1AFFD1 and #1A47FF. It also appears in 6+ palettes in our collection.

Can I use #18BBFF for text?

Black text on #18BBFF has a contrast ratio of 9.59:1 (passes WCAG AA); white text gives 2.19:1.