Palettes / Colors / #356EFF

#356EFF — Vivid Blue

#356EFF 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 #356EFF 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.

#356EFF 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 #FFC533; it also sits naturally between #33D3FF and #5F33FF. 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 21% · Green 43% · Blue 100%

Cyan 79% · Magenta 57% · Yellow 0% · Key 0%

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

Previews

CSS code for #356EFF

.text { color: #356EFF; }
.background { background-color: #356EFF; }
.border { border: 3px solid #356EFF; }
.text-rgb { color: rgb(53, 110, 255); }
.text-hsl { color: hsl(223, 100%, 60%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #356EFF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(53, 110, 255, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #356EFF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(53, 110, 255, 0.8); }

HTML: <p style="color:#356EFF">Text here</p> · <div style="background-color:#356EFF">Div content here</div>

Shades of #356EFF

Tints of #356EFF

Tones of #356EFF

Color harmonies

Complementary — #FFC533:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #356EFF: #000000.

Semi-transparent (opacity) text on #356EFF

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 #356EFF 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 #356EFF 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

← #356EFE  ·  #356F00 →

Frequently asked questions

What color is #356EFF?

#356EFF is Vivid Blue, a blue color (RGB 53, 110, 255). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #356EFF?

#356EFF is RGB 53, 110, 255 — HSL 223°, 100%, 60% — CMYK 79%, 57%, 0%, 0%.

What colors go with #356EFF?

Its complement is #FFC533; analogous partners are #33D3FF and #5F33FF. It also appears in 6+ palettes in our collection.

Can I use #356EFF for text?

Black text on #356EFF has a contrast ratio of 4.83:1 (passes WCAG AA); white text gives 4.35:1.