Palettes / Colors / #577DEF

#577DEF — Vivid Blue

#577DEF is a blue color we call Vivid Blue, closest to the named color CornflowerBlue (#6495ED). It belongs to the blue family.

Color name

Closest CSS keyword: cornflowerblue (#6495ED) — not an exact match. CSS cornflowerblue gives you #6495ED, a different color; use #577DEF 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.

#577DEF is a cool blue color associated with trust, calm and professionalism. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #EFC957; it also sits naturally between #57C9EF and #7D57EF. 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 49% · Blue 94%

Cyan 64% · Magenta 48% · Yellow 0% · Key 6%

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

Previews

CSS code for #577DEF

.text { color: #577DEF; }
.background { background-color: #577DEF; }
.border { border: 3px solid #577DEF; }
.text-rgb { color: rgb(87, 125, 239); }
.text-hsl { color: hsl(225, 83%, 64%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #577DEF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(87, 125, 239, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #577DEF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(87, 125, 239, 0.8); }

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

Shades of #577DEF

Tints of #577DEF

Tones of #577DEF

Color harmonies

Complementary — #EFC957:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #577DEF: #000000.

Semi-transparent (opacity) text on #577DEF

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 #577DEF 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 #577DEF 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

← #577DEE  ·  #577DF0 →

Frequently asked questions

What color is #577DEF?

#577DEF is Vivid Blue, a blue color (RGB 87, 125, 239). Its closest standard named color is CornflowerBlue.

What is the RGB and HSL of #577DEF?

#577DEF is RGB 87, 125, 239 — HSL 225°, 83%, 64% — CMYK 64%, 48%, 0%, 6%.

What colors go with #577DEF?

Its complement is #EFC957; analogous partners are #57C9EF and #7D57EF. It also appears in 6+ palettes in our collection.

Can I use #577DEF for text?

Black text on #577DEF has a contrast ratio of 5.59:1 (passes WCAG AA); white text gives 3.76:1.