Palettes / Colors / #3F439D

#3F439D — Muted Blue

#3F439D is a blue color we call Muted Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.

#3F439D is a cool blue color associated with trust, calm and professionalism. It sits comfortably in the middle: usable for large areas in soft schemes, or as a supporting color beside something stronger.

Its strongest partner is its complement #9D983F; it also sits naturally between #3F729D and #693F9D. 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 25% · Green 26% · Blue 62%

Cyan 60% · Magenta 57% · Yellow 0% · Key 38%

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

Previews

CSS code for #3F439D

.text { color: #3F439D; }
.background { background-color: #3F439D; }
.border { border: 3px solid #3F439D; }
.text-rgb { color: rgb(63, 67, 157); }
.text-hsl { color: hsl(237, 43%, 43%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #3F439D; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(63, 67, 157, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #3F439D; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(63, 67, 157, 0.8); }

HTML: <p style="color:#3F439D">Text here</p> · <div style="background-color:#3F439D">Div content here</div>

Shades of #3F439D

Tints of #3F439D

Tones of #3F439D

Color harmonies

Complementary — #9D983F:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #3F439D: #FFFFFF.

How #3F439D 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 #3F439D 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

← #3F439C  ·  #3F439E →

Frequently asked questions

What color is #3F439D?

#3F439D is Muted Blue, a blue color (RGB 63, 67, 157). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #3F439D?

#3F439D is RGB 63, 67, 157 — HSL 237°, 43%, 43% — CMYK 60%, 57%, 0%, 38%.

What colors go with #3F439D?

Its complement is #9D983F; analogous partners are #3F729D and #693F9D. It also appears in 6+ palettes in our collection.

Can I use #3F439D for text?

White text on #3F439D has a contrast ratio of 8.40:1 (passes WCAG AA); black text gives 2.50:1.