Palettes / Colors / #646DEC

#646DEC — Light Vivid Blue

#646DEC is a blue color we call Light 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 #646DEC 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.

#646DEC 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 #ECE365; it also sits naturally between #65B1EC and #9F65EC. 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 39% · Green 43% · Blue 93%

Cyan 58% · Magenta 54% · Yellow 0% · Key 7%

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

Previews

CSS code for #646DEC

.text { color: #646DEC; }
.background { background-color: #646DEC; }
.border { border: 3px solid #646DEC; }
.text-rgb { color: rgb(100, 109, 236); }
.text-hsl { color: hsl(236, 78%, 66%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #646DEC; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(100, 109, 236, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #646DEC; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(100, 109, 236, 0.8); }

HTML: <p style="color:#646DEC">Text here</p> · <div style="background-color:#646DEC">Div content here</div>

Shades of #646DEC

Tints of #646DEC

Tones of #646DEC

Color harmonies

Complementary — #ECE365:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #646DEC: #000000.

Semi-transparent (opacity) text on #646DEC

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 #646DEC 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 #646DEC 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

← #646DEB  ·  #646DED →

Frequently asked questions

What color is #646DEC?

#646DEC is Light Vivid Blue, a blue color (RGB 100, 109, 236). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #646DEC?

#646DEC is RGB 100, 109, 236 — HSL 236°, 78%, 66% — CMYK 58%, 54%, 0%, 7%.

What colors go with #646DEC?

Its complement is #ECE365; analogous partners are #65B1EC and #9F65EC. It also appears in 6+ palettes in our collection.

Can I use #646DEC for text?

Black text on #646DEC has a contrast ratio of 4.94:1 (passes WCAG AA); white text gives 4.25:1.