Palettes / Colors / #331AFF

#331AFF — Vivid Blue

#331AFF is a blue color we call Vivid Blue, closest to the named color Blue (#0000FF). It belongs to the blue family.

Color name

Closest CSS keyword: blue (#0000FF) — not an exact match. CSS blue gives you #0000FF, a different color; use #331AFF 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.

#331AFF 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 #E4FF1A; it also sits naturally between #1A71FF and #A71AFF. 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 20% · Green 10% · Blue 100%

Cyan 80% · Magenta 90% · Yellow 0% · Key 0%

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

Previews

CSS code for #331AFF

.text { color: #331AFF; }
.background { background-color: #331AFF; }
.border { border: 3px solid #331AFF; }
.text-rgb { color: rgb(51, 26, 255); }
.text-hsl { color: hsl(247, 100%, 55%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #331AFF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(51, 26, 255, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #331AFF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(51, 26, 255, 0.8); }

HTML: <p style="color:#331AFF">Text here</p> · <div style="background-color:#331AFF">Div content here</div>

Shades of #331AFF

Tints of #331AFF

Tones of #331AFF

Color harmonies

Complementary — #E4FF1A:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #331AFF: #FFFFFF.

Semi-transparent (opacity) text on #331AFF

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 #331AFF 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 #331AFF 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

← #331AFE  ·  #331B00 →

Frequently asked questions

What color is #331AFF?

#331AFF is Vivid Blue, a blue color (RGB 51, 26, 255). Its closest standard named color is Blue.

What is the RGB and HSL of #331AFF?

#331AFF is RGB 51, 26, 255 — HSL 247°, 100%, 55% — CMYK 80%, 90%, 0%, 0%.

What colors go with #331AFF?

Its complement is #E4FF1A; analogous partners are #1A71FF and #A71AFF. It also appears in 6+ palettes in our collection.

Can I use #331AFF for text?

White text on #331AFF has a contrast ratio of 7.69:1 (passes WCAG AA); black text gives 2.73:1.