Palettes / Colors / #03439B

#03439B — Vivid Blue

#03439B is a blue color we call 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 #03439B 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.

#03439B 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 #9B5C03; it also sits naturally between #038E9B and #10039B. 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 1% · Green 26% · Blue 61%

Cyan 98% · Magenta 57% · Yellow 0% · Key 39%

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

Previews

CSS code for #03439B

.text { color: #03439B; }
.background { background-color: #03439B; }
.border { border: 3px solid #03439B; }
.text-rgb { color: rgb(3, 67, 155); }
.text-hsl { color: hsl(215, 96%, 31%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #03439B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(3, 67, 155, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #03439B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(3, 67, 155, 0.8); }

HTML: <p style="color:#03439B">Text here</p> · <div style="background-color:#03439B">Div content here</div>

Shades of #03439B

Tints of #03439B

Tones of #03439B

Color harmonies

Complementary — #9B5C03:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #03439B: #FFFFFF.

Semi-transparent (opacity) text on #03439B

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 #03439B 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 #03439B 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

← #03439A  ·  #03439C →

Frequently asked questions

What color is #03439B?

#03439B is Vivid Blue, a blue color (RGB 3, 67, 155). Its closest standard named color is MidnightBlue.

What is the RGB and HSL of #03439B?

#03439B is RGB 3, 67, 155 — HSL 215°, 96%, 31% — CMYK 98%, 57%, 0%, 39%.

What colors go with #03439B?

Its complement is #9B5C03; analogous partners are #038E9B and #10039B. It also appears in 6+ palettes in our collection.

Can I use #03439B for text?

White text on #03439B has a contrast ratio of 9.21:1 (passes WCAG AA); black text gives 2.28:1.