Palettes / Colors / #686CBB

#686CBB — Muted Blue

#686CBB is a blue color we call Muted 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 #686CBB 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.

#686CBB 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 #BBB768; it also sits naturally between #6896BB and #8D68BB. 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 42% · Blue 73%

Cyan 44% · Magenta 42% · Yellow 0% · Key 27%

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

Previews

CSS code for #686CBB

.text { color: #686CBB; }
.background { background-color: #686CBB; }
.border { border: 3px solid #686CBB; }
.text-rgb { color: rgb(104, 108, 187); }
.text-hsl { color: hsl(237, 38%, 57%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #686CBB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(104, 108, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #686CBB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(104, 108, 187, 0.8); }

HTML: <p style="color:#686CBB">Text here</p> · <div style="background-color:#686CBB">Div content here</div>

Shades of #686CBB

Tints of #686CBB

Tones of #686CBB

Color harmonies

Complementary — #BBB768:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #686CBB: #FFFFFF.

Semi-transparent (opacity) text on #686CBB

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 #686CBB 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 #686CBB 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

← #686CBA  ·  #686CBC →

Frequently asked questions

What color is #686CBB?

#686CBB is Muted Blue, a blue color (RGB 104, 108, 187). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #686CBB?

#686CBB is RGB 104, 108, 187 — HSL 237°, 38%, 57% — CMYK 44%, 42%, 0%, 27%.

What colors go with #686CBB?

Its complement is #BBB768; analogous partners are #6896BB and #8D68BB. It also appears in 6+ palettes in our collection.

Can I use #686CBB for text?

White text on #686CBB has a contrast ratio of 4.72:1 (passes WCAG AA); black text gives 4.45:1.