Palettes / Colors / #034378

#034378 — Deep Vivid Blue

#034378 is a blue color we call Deep Vivid Blue, closest to the named color MidnightBlue (#191970). It belongs to the blue family.

Color name

Closest CSS keyword: midnightblue (#191970) — not an exact match. CSS midnightblue gives you #191970, a different color; use #034378 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.

#034378 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 #773703; it also sits naturally between #037772 and #030977. 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 1% · Green 26% · Blue 47%

Cyan 98% · Magenta 44% · Yellow 0% · Key 53%

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

Previews

CSS code for #034378

.text { color: #034378; }
.background { background-color: #034378; }
.border { border: 3px solid #034378; }
.text-rgb { color: rgb(3, 67, 120); }
.text-hsl { color: hsl(207, 95%, 24%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #034378; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(3, 67, 120, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #034378; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(3, 67, 120, 0.8); }

HTML: <p style="color:#034378">Text here</p> · <div style="background-color:#034378">Div content here</div>

Shades of #034378

Tints of #034378

Tones of #034378

Color harmonies

Complementary — #773703:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #034378: #FFFFFF.

Semi-transparent (opacity) text on #034378

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 #034378 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 #034378 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

← #034377  ·  #034379 →

Frequently asked questions

What color is #034378?

#034378 is Deep Vivid Blue, a blue color (RGB 3, 67, 120). Its closest standard named color is MidnightBlue.

What is the RGB and HSL of #034378?

#034378 is RGB 3, 67, 120 — HSL 207°, 95%, 24% — CMYK 98%, 44%, 0%, 53%.

What colors go with #034378?

Its complement is #773703; analogous partners are #037772 and #030977. It also appears in 6+ palettes in our collection.

Can I use #034378 for text?

White text on #034378 has a contrast ratio of 10.11:1 (passes WCAG AA); black text gives 2.08:1.