Palettes / Colors / #51549B

#51549B — Dusty Blue

#51549B is a blue color we call Dusty 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 #51549B 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.

#51549B 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 #9A9751; it also sits naturally between #51789A and #73519A. 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 32% · Green 33% · Blue 61%

Cyan 48% · Magenta 46% · Yellow 0% · Key 39%

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

Previews

CSS code for #51549B

.text { color: #51549B; }
.background { background-color: #51549B; }
.border { border: 3px solid #51549B; }
.text-rgb { color: rgb(81, 84, 155); }
.text-hsl { color: hsl(238, 31%, 46%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #51549B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(81, 84, 155, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #51549B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(81, 84, 155, 0.8); }

HTML: <p style="color:#51549B">Text here</p> · <div style="background-color:#51549B">Div content here</div>

Shades of #51549B

Tints of #51549B

Tones of #51549B

Color harmonies

Complementary — #9A9751:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #51549B: #FFFFFF.

Semi-transparent (opacity) text on #51549B

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 #51549B 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 #51549B 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

← #51549A  ·  #51549C →

Frequently asked questions

What color is #51549B?

#51549B is Dusty Blue, a blue color (RGB 81, 84, 155). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #51549B?

#51549B is RGB 81, 84, 155 — HSL 238°, 31%, 46% — CMYK 48%, 46%, 0%, 39%.

What colors go with #51549B?

Its complement is #9A9751; analogous partners are #51789A and #73519A. It also appears in 6+ palettes in our collection.

Can I use #51549B for text?

White text on #51549B has a contrast ratio of 6.79:1 (passes WCAG AA); black text gives 3.09:1.