Palettes / Colors / #040FA4

#040FA4 — Vivid Blue

#040FA4 is a blue color we call Vivid Blue, closest to the named color DarkBlue (#00008B). It belongs to the blue family.

Color name

Closest CSS keyword: darkblue (#00008B) — not an exact match. CSS darkblue gives you #00008B, a different color; use #040FA4 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.

#040FA4 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 #A49904; it also sits naturally between #045FA4 and #4904A4. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 2% · Green 6% · Blue 64%

Cyan 98% · Magenta 91% · Yellow 0% · Key 36%

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

Previews

CSS code for #040FA4

.text { color: #040FA4; }
.background { background-color: #040FA4; }
.border { border: 3px solid #040FA4; }
.text-rgb { color: rgb(4, 15, 164); }
.text-hsl { color: hsl(236, 95%, 33%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #040FA4; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(4, 15, 164, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #040FA4; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(4, 15, 164, 0.8); }

HTML: <p style="color:#040FA4">Text here</p> · <div style="background-color:#040FA4">Div content here</div>

Shades of #040FA4

Tints of #040FA4

Tones of #040FA4

Color harmonies

Complementary — #A49904:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #040FA4: #FFFFFF.

Semi-transparent (opacity) text on #040FA4

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 #040FA4 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 #040FA4 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

← #040FA3  ·  #040FA5 →

Frequently asked questions

What color is #040FA4?

#040FA4 is Vivid Blue, a blue color (RGB 4, 15, 164). Its closest standard named color is DarkBlue.

What is the RGB and HSL of #040FA4?

#040FA4 is RGB 4, 15, 164 — HSL 236°, 95%, 33% — CMYK 98%, 91%, 0%, 36%.

What colors go with #040FA4?

Its complement is #A49904; analogous partners are #045FA4 and #4904A4. It also appears in 6+ palettes in our collection.

Can I use #040FA4 for text?

White text on #040FA4 has a contrast ratio of 13.05:1 (passes WCAG AA); black text gives 1.61:1.