Palettes / Colors / #554BBB

#554BBB — Muted Blue

#554BBB is a blue color we call Muted Blue, closest to the named color SlateBlue (#6A5ACD). It belongs to the blue family.

Color name

Closest CSS keyword: slateblue (#6A5ACD) — not an exact match. CSS slateblue gives you #6A5ACD, a different color; use #554BBB 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.

#554BBB 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 #B1BA4A; it also sits naturally between #4A79BA and #8B4ABA. 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 33% · Green 29% · Blue 73%

Cyan 55% · Magenta 60% · Yellow 0% · Key 27%

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

Previews

CSS code for #554BBB

.text { color: #554BBB; }
.background { background-color: #554BBB; }
.border { border: 3px solid #554BBB; }
.text-rgb { color: rgb(85, 75, 187); }
.text-hsl { color: hsl(245, 45%, 51%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #554BBB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(85, 75, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #554BBB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(85, 75, 187, 0.8); }

HTML: <p style="color:#554BBB">Text here</p> · <div style="background-color:#554BBB">Div content here</div>

Shades of #554BBB

Tints of #554BBB

Tones of #554BBB

Color harmonies

Complementary — #B1BA4A:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #554BBB: #FFFFFF.

Semi-transparent (opacity) text on #554BBB

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 #554BBB 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 #554BBB 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

← #554BBA  ·  #554BBC →

Frequently asked questions

What color is #554BBB?

#554BBB is Muted Blue, a blue color (RGB 85, 75, 187). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #554BBB?

#554BBB is RGB 85, 75, 187 — HSL 245°, 45%, 51% — CMYK 55%, 60%, 0%, 27%.

What colors go with #554BBB?

Its complement is #B1BA4A; analogous partners are #4A79BA and #8B4ABA. It also appears in 6+ palettes in our collection.

Can I use #554BBB for text?

White text on #554BBB has a contrast ratio of 6.75:1 (passes WCAG AA); black text gives 3.11:1.