Palettes / Colors / #403DEB

#403DEB — Vivid Blue

#403DEB 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 #403DEB 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.

#403DEB 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 #E8EB3D; it also sits naturally between #3D91EB and #973DEB. 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 25% · Green 24% · Blue 92%

Cyan 73% · Magenta 74% · Yellow 0% · Key 8%

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

Previews

CSS code for #403DEB

.text { color: #403DEB; }
.background { background-color: #403DEB; }
.border { border: 3px solid #403DEB; }
.text-rgb { color: rgb(64, 61, 235); }
.text-hsl { color: hsl(241, 81%, 58%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #403DEB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(64, 61, 235, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #403DEB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(64, 61, 235, 0.8); }

HTML: <p style="color:#403DEB">Text here</p> · <div style="background-color:#403DEB">Div content here</div>

Shades of #403DEB

Tints of #403DEB

Tones of #403DEB

Color harmonies

Complementary — #E8EB3D:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #403DEB: #FFFFFF.

Semi-transparent (opacity) text on #403DEB

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 #403DEB 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 #403DEB 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

← #403DEA  ·  #403DEC →

Frequently asked questions

What color is #403DEB?

#403DEB is Vivid Blue, a blue color (RGB 64, 61, 235). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #403DEB?

#403DEB is RGB 64, 61, 235 — HSL 241°, 81%, 58% — CMYK 73%, 74%, 0%, 8%.

What colors go with #403DEB?

Its complement is #E8EB3D; analogous partners are #3D91EB and #973DEB. It also appears in 6+ palettes in our collection.

Can I use #403DEB for text?

White text on #403DEB has a contrast ratio of 6.81:1 (passes WCAG AA); black text gives 3.09:1.