Palettes / Colors / #573BBF

#573BBF — Muted Blue

#573BBF 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 #573BBF 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.

#573BBF 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 #A2BF3B; it also sits naturally between #3B60BF and #9A3BBF. 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 23% · Blue 75%

Cyan 54% · Magenta 69% · Yellow 0% · Key 25%

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

Previews

CSS code for #573BBF

.text { color: #573BBF; }
.background { background-color: #573BBF; }
.border { border: 3px solid #573BBF; }
.text-rgb { color: rgb(87, 59, 191); }
.text-hsl { color: hsl(253, 53%, 49%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #573BBF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(87, 59, 191, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #573BBF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(87, 59, 191, 0.8); }

HTML: <p style="color:#573BBF">Text here</p> · <div style="background-color:#573BBF">Div content here</div>

Shades of #573BBF

Tints of #573BBF

Tones of #573BBF

Color harmonies

Complementary — #A2BF3B:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #573BBF: #FFFFFF.

Semi-transparent (opacity) text on #573BBF

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 #573BBF 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 #573BBF 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

← #573BBE  ·  #573BC0 →

Frequently asked questions

What color is #573BBF?

#573BBF is Muted Blue, a blue color (RGB 87, 59, 191). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #573BBF?

#573BBF is RGB 87, 59, 191 — HSL 253°, 53%, 49% — CMYK 54%, 69%, 0%, 25%.

What colors go with #573BBF?

Its complement is #A2BF3B; analogous partners are #3B60BF and #9A3BBF. It also appears in 6+ palettes in our collection.

Can I use #573BBF for text?

White text on #573BBF has a contrast ratio of 7.55:1 (passes WCAG AA); black text gives 2.78:1.