Palettes / Colors / #331DD5

#331DD5 — Blue

#331DD5 is a blue color we call 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 #331DD5 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.

#331DD5 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 #BED31D; it also sits naturally between #1D63D3 and #8D1DD3. 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 11% · Blue 84%

Cyan 76% · Magenta 86% · Yellow 0% · Key 16%

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

Previews

CSS code for #331DD5

.text { color: #331DD5; }
.background { background-color: #331DD5; }
.border { border: 3px solid #331DD5; }
.text-rgb { color: rgb(51, 29, 213); }
.text-hsl { color: hsl(247, 76%, 47%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #331DD5; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(51, 29, 213, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #331DD5; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(51, 29, 213, 0.8); }

HTML: <p style="color:#331DD5">Text here</p> · <div style="background-color:#331DD5">Div content here</div>

Shades of #331DD5

Tints of #331DD5

Tones of #331DD5

Color harmonies

Complementary — #BED31D:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #331DD5: #FFFFFF.

Semi-transparent (opacity) text on #331DD5

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 #331DD5 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 #331DD5 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

← #331DD4  ·  #331DD6 →

Frequently asked questions

What color is #331DD5?

#331DD5 is Blue, a blue color (RGB 51, 29, 213). Its closest standard named color is Blue.

What is the RGB and HSL of #331DD5?

#331DD5 is RGB 51, 29, 213 — HSL 247°, 76%, 47% — CMYK 76%, 86%, 0%, 16%.

What colors go with #331DD5?

Its complement is #BED31D; analogous partners are #1D63D3 and #8D1DD3. It also appears in 6+ palettes in our collection.

Can I use #331DD5 for text?

White text on #331DD5 has a contrast ratio of 9.22:1 (passes WCAG AA); black text gives 2.28:1.