Palettes / Colors / #0404FB

#0404FB — Vivid Blue

#0404FB is a blue color we call Vivid Blue, closest to the named color Blue (#0000FF). It belongs to the blue family.

#0404FB 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 #FBFB04; it also sits naturally between #0480FB and #8004FB. 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 2% · Green 2% · Blue 98%

Cyan 98% · Magenta 98% · Yellow 0% · Key 2%

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

Previews

CSS code for #0404FB

.text { color: #0404FB; }
.background { background-color: #0404FB; }
.border { border: 3px solid #0404FB; }
.text-rgb { color: rgb(4, 4, 251); }
.text-hsl { color: hsl(240, 97%, 50%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #0404FB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(4, 4, 251, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #0404FB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(4, 4, 251, 0.8); }

HTML: <p style="color:#0404FB">Text here</p> · <div style="background-color:#0404FB">Div content here</div>

Shades of #0404FB

Tints of #0404FB

Tones of #0404FB

Color harmonies

Complementary — #FBFB04:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #0404FB: #FFFFFF.

How #0404FB 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 #0404FB 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

← #0404FA  ·  #0404FC →

Frequently asked questions

What color is #0404FB?

#0404FB is Vivid Blue, a blue color (RGB 4, 4, 251). Its closest standard named color is Blue.

What is the RGB and HSL of #0404FB?

#0404FB is RGB 4, 4, 251 — HSL 240°, 97%, 50% — CMYK 98%, 98%, 0%, 2%.

What colors go with #0404FB?

Its complement is #FBFB04; analogous partners are #0480FB and #8004FB. It also appears in 6+ palettes in our collection.

Can I use #0404FB for text?

White text on #0404FB has a contrast ratio of 8.69:1 (passes WCAG AA); black text gives 2.42:1.