Palettes / Colors / #403CBE

#403CBE — Muted Blue

#403CBE 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 #403CBE 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.

#403CBE 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 #BABE3C; it also sits naturally between #3C79BE and #813CBE. 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 24% · Blue 75%

Cyan 66% · Magenta 68% · Yellow 0% · Key 25%

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

Previews

CSS code for #403CBE

.text { color: #403CBE; }
.background { background-color: #403CBE; }
.border { border: 3px solid #403CBE; }
.text-rgb { color: rgb(64, 60, 190); }
.text-hsl { color: hsl(242, 52%, 49%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #403CBE; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(64, 60, 190, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #403CBE; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(64, 60, 190, 0.8); }

HTML: <p style="color:#403CBE">Text here</p> · <div style="background-color:#403CBE">Div content here</div>

Shades of #403CBE

Tints of #403CBE

Tones of #403CBE

Color harmonies

Complementary — #BABE3C:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #403CBE: #FFFFFF.

Semi-transparent (opacity) text on #403CBE

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 #403CBE 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 #403CBE 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

← #403CBD  ·  #403CBF →

Frequently asked questions

What color is #403CBE?

#403CBE is Muted Blue, a blue color (RGB 64, 60, 190). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #403CBE?

#403CBE is RGB 64, 60, 190 — HSL 242°, 52%, 49% — CMYK 66%, 68%, 0%, 25%.

What colors go with #403CBE?

Its complement is #BABE3C; analogous partners are #3C79BE and #813CBE. It also appears in 6+ palettes in our collection.

Can I use #403CBE for text?

White text on #403CBE has a contrast ratio of 8.05:1 (passes WCAG AA); black text gives 2.61:1.