Palettes / Colors / #40407F

#40407F — Muted Blue

#40407F is a blue color we call Muted Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.

Color name

Closest CSS keyword: darkslateblue (#483D8B) — not an exact match. CSS darkslateblue gives you #483D8B, a different color; use #40407F 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.

#40407F 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 #7D7D3F; it also sits naturally between #3F5E7D and #5E3F7D. 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 25% · Green 25% · Blue 50%

Cyan 50% · Magenta 50% · Yellow 0% · Key 50%

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

Previews

CSS code for #40407F

.text { color: #40407F; }
.background { background-color: #40407F; }
.border { border: 3px solid #40407F; }
.text-rgb { color: rgb(64, 64, 127); }
.text-hsl { color: hsl(240, 33%, 37%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #40407F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(64, 64, 127, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #40407F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(64, 64, 127, 0.8); }

HTML: <p style="color:#40407F">Text here</p> · <div style="background-color:#40407F">Div content here</div>

Shades of #40407F

Tints of #40407F

Tones of #40407F

Color harmonies

Complementary — #7D7D3F:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #40407F: #FFFFFF.

Semi-transparent (opacity) text on #40407F

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 #40407F 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 #40407F 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

← #40407E  ·  #404080 →

Frequently asked questions

What color is #40407F?

#40407F is Muted Blue, a blue color (RGB 64, 64, 127). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #40407F?

#40407F is RGB 64, 64, 127 — HSL 240°, 33%, 37% — CMYK 50%, 50%, 0%, 50%.

What colors go with #40407F?

Its complement is #7D7D3F; analogous partners are #3F5E7D and #5E3F7D. It also appears in 6+ palettes in our collection.

Can I use #40407F for text?

White text on #40407F has a contrast ratio of 9.30:1 (passes WCAG AA); black text gives 2.26:1.