Palettes / Colors / #577B87

#577B87 — Dusty Blue

#577B87 is a blue color we call Dusty Blue, closest to the named color SlateGray (#708090). It belongs to the blue family.

Color name

Closest CSS keyword: slategray (#708090) — not an exact match. CSS slategray gives you #708090, a different color; use #577B87 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.

#577B87 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 #896458; it also sits naturally between #58897D and #586489. 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 34% · Green 48% · Blue 53%

Cyan 36% · Magenta 9% · Yellow 0% · Key 47%

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

Previews

CSS code for #577B87

.text { color: #577B87; }
.background { background-color: #577B87; }
.border { border: 3px solid #577B87; }
.text-rgb { color: rgb(87, 123, 135); }
.text-hsl { color: hsl(195, 22%, 44%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #577B87; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(87, 123, 135, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #577B87; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(87, 123, 135, 0.8); }

HTML: <p style="color:#577B87">Text here</p> · <div style="background-color:#577B87">Div content here</div>

Shades of #577B87

Tints of #577B87

Tones of #577B87

Color harmonies

Complementary — #896458:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #577B87: #000000.

Semi-transparent (opacity) text on #577B87

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 #577B87 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 #577B87 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

← #577B86  ·  #577B88 →

Frequently asked questions

What color is #577B87?

#577B87 is Dusty Blue, a blue color (RGB 87, 123, 135). Its closest standard named color is SlateGray.

What is the RGB and HSL of #577B87?

#577B87 is RGB 87, 123, 135 — HSL 195°, 22%, 44% — CMYK 36%, 9%, 0%, 47%.

What colors go with #577B87?

Its complement is #896458; analogous partners are #58897D and #586489. It also appears in 6+ palettes in our collection.

Can I use #577B87 for text?

Black text on #577B87 has a contrast ratio of 4.59:1 (passes WCAG AA); white text gives 4.58:1.