Palettes / Colors / #355DFF

#355DFF — Vivid Blue

#355DFF is a blue color we call Vivid Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

Color name

Closest CSS keyword: royalblue (#4169E1) — not an exact match. CSS royalblue gives you #4169E1, a different color; use #355DFF 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.

#355DFF 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 #FFD633; it also sits naturally between #33C2FF and #7033FF. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 21% · Green 36% · Blue 100%

Cyan 79% · Magenta 64% · Yellow 0% · Key 0%

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

Previews

CSS code for #355DFF

.text { color: #355DFF; }
.background { background-color: #355DFF; }
.border { border: 3px solid #355DFF; }
.text-rgb { color: rgb(53, 93, 255); }
.text-hsl { color: hsl(228, 100%, 60%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #355DFF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(53, 93, 255, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #355DFF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(53, 93, 255, 0.8); }

HTML: <p style="color:#355DFF">Text here</p> · <div style="background-color:#355DFF">Div content here</div>

Shades of #355DFF

Tints of #355DFF

Tones of #355DFF

Color harmonies

Complementary — #FFD633:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #355DFF: #FFFFFF.

Semi-transparent (opacity) text on #355DFF

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 #355DFF 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 #355DFF 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

← #355DFE  ·  #355E00 →

Frequently asked questions

What color is #355DFF?

#355DFF is Vivid Blue, a blue color (RGB 53, 93, 255). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #355DFF?

#355DFF is RGB 53, 93, 255 — HSL 228°, 100%, 60% — CMYK 79%, 64%, 0%, 0%.

What colors go with #355DFF?

Its complement is #FFD633; analogous partners are #33C2FF and #7033FF. It also appears in 6+ palettes in our collection.

Can I use #355DFF for text?

White text on #355DFF has a contrast ratio of 5.05:1 (passes WCAG AA); black text gives 4.16:1.