Palettes / Colors / #684EEF

#684EEF — Vivid Blue

#684EEF 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 #684EEF 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.

#684EEF 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 #D4EF4E; it also sits naturally between #4E83EF and #B94EEF. 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 41% · Green 31% · Blue 94%

Cyan 56% · Magenta 67% · Yellow 0% · Key 6%

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

Previews

CSS code for #684EEF

.text { color: #684EEF; }
.background { background-color: #684EEF; }
.border { border: 3px solid #684EEF; }
.text-rgb { color: rgb(104, 78, 239); }
.text-hsl { color: hsl(250, 83%, 62%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #684EEF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(104, 78, 239, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #684EEF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(104, 78, 239, 0.8); }

HTML: <p style="color:#684EEF">Text here</p> · <div style="background-color:#684EEF">Div content here</div>

Shades of #684EEF

Tints of #684EEF

Tones of #684EEF

Color harmonies

Complementary — #D4EF4E:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #684EEF: #FFFFFF.

Semi-transparent (opacity) text on #684EEF

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 #684EEF 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 #684EEF 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

← #684EEE  ·  #684EF0 →

Frequently asked questions

What color is #684EEF?

#684EEF is Vivid Blue, a blue color (RGB 104, 78, 239). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #684EEF?

#684EEF is RGB 104, 78, 239 — HSL 250°, 83%, 62% — CMYK 56%, 67%, 0%, 6%.

What colors go with #684EEF?

Its complement is #D4EF4E; analogous partners are #4E83EF and #B94EEF. It also appears in 6+ palettes in our collection.

Can I use #684EEF for text?

White text on #684EEF has a contrast ratio of 5.35:1 (passes WCAG AA); black text gives 3.92:1.