Palettes / Colors / #665AED

#665AED — Vivid Blue

#665AED is a blue color we call Vivid 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 #665AED 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.

#665AED 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 #E0ED5A; it also sits naturally between #5A97ED and #AF5AED. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 40% · Green 35% · Blue 93%

Cyan 57% · Magenta 62% · Yellow 0% · Key 7%

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

Previews

CSS code for #665AED

.text { color: #665AED; }
.background { background-color: #665AED; }
.border { border: 3px solid #665AED; }
.text-rgb { color: rgb(102, 90, 237); }
.text-hsl { color: hsl(245, 80%, 64%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #665AED; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(102, 90, 237, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #665AED; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(102, 90, 237, 0.8); }

HTML: <p style="color:#665AED">Text here</p> · <div style="background-color:#665AED">Div content here</div>

Shades of #665AED

Tints of #665AED

Tones of #665AED

Color harmonies

Complementary — #E0ED5A:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #665AED: #FFFFFF.

Semi-transparent (opacity) text on #665AED

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 #665AED 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 #665AED 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

← #665AEC  ·  #665AEE →

Frequently asked questions

What color is #665AED?

#665AED is Vivid Blue, a blue color (RGB 102, 90, 237). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #665AED?

#665AED is RGB 102, 90, 237 — HSL 245°, 80%, 64% — CMYK 57%, 62%, 0%, 7%.

What colors go with #665AED?

Its complement is #E0ED5A; analogous partners are #5A97ED and #AF5AED. It also appears in 6+ palettes in our collection.

Can I use #665AED for text?

White text on #665AED has a contrast ratio of 4.94:1 (passes WCAG AA); black text gives 4.25:1.