Palettes / Colors / #669BCC

#669BCC — Muted Blue

#669BCC is a blue color we call Muted 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 #669BCC 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.

#669BCC 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 #CC9766; it also sits naturally between #66CCCA and #6668CC. 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 40% · Green 61% · Blue 80%

Cyan 50% · Magenta 24% · Yellow 0% · Key 20%

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

Previews

CSS code for #669BCC

.text { color: #669BCC; }
.background { background-color: #669BCC; }
.border { border: 3px solid #669BCC; }
.text-rgb { color: rgb(102, 155, 204); }
.text-hsl { color: hsl(209, 50%, 60%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #669BCC; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(102, 155, 204, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #669BCC; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(102, 155, 204, 0.8); }

HTML: <p style="color:#669BCC">Text here</p> · <div style="background-color:#669BCC">Div content here</div>

Shades of #669BCC

Tints of #669BCC

Tones of #669BCC

Color harmonies

Complementary — #CC9766:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #669BCC: #000000.

Semi-transparent (opacity) text on #669BCC

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 #669BCC 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 #669BCC 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

← #669BCB  ·  #669BCD →

Frequently asked questions

What color is #669BCC?

#669BCC is Muted Blue, a blue color (RGB 102, 155, 204). Its closest standard named color is CornflowerBlue.

What is the RGB and HSL of #669BCC?

#669BCC is RGB 102, 155, 204 — HSL 209°, 50%, 60% — CMYK 50%, 24%, 0%, 20%.

What colors go with #669BCC?

Its complement is #CC9766; analogous partners are #66CCCA and #6668CC. It also appears in 6+ palettes in our collection.

Can I use #669BCC for text?

Black text on #669BCC has a contrast ratio of 7.13:1 (passes WCAG AA); white text gives 2.95:1.