Palettes / Colors / #6367BB

#6367BB — Muted Blue

#6367BB 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 #6367BB 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.

#6367BB 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 #BBB663; it also sits naturally between #6393BB and #8A63BB. 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 40% · Blue 73%

Cyan 47% · Magenta 45% · Yellow 0% · Key 27%

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

Previews

CSS code for #6367BB

.text { color: #6367BB; }
.background { background-color: #6367BB; }
.border { border: 3px solid #6367BB; }
.text-rgb { color: rgb(99, 103, 187); }
.text-hsl { color: hsl(237, 39%, 56%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #6367BB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(99, 103, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #6367BB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(99, 103, 187, 0.8); }

HTML: <p style="color:#6367BB">Text here</p> · <div style="background-color:#6367BB">Div content here</div>

Shades of #6367BB

Tints of #6367BB

Tones of #6367BB

Color harmonies

Complementary — #BBB663:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #6367BB: #FFFFFF.

Semi-transparent (opacity) text on #6367BB

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 #6367BB 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 #6367BB 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

← #6367BA  ·  #6367BC →

Frequently asked questions

What color is #6367BB?

#6367BB is Muted Blue, a blue color (RGB 99, 103, 187). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #6367BB?

#6367BB is RGB 99, 103, 187 — HSL 237°, 39%, 56% — CMYK 47%, 45%, 0%, 27%.

What colors go with #6367BB?

Its complement is #BBB663; analogous partners are #6393BB and #8A63BB. It also appears in 6+ palettes in our collection.

Can I use #6367BB for text?

White text on #6367BB has a contrast ratio of 5.01:1 (passes WCAG AA); black text gives 4.19:1.