Palettes / Colors / #6331BF

#6331BF — Purple

#6331BF is a purple color we call Purple, closest to the named color SlateBlue (#6A5ACD). It belongs to the purple family.

Color name

Closest CSS keyword: slateblue (#6A5ACD) — not an exact match. CSS slateblue gives you #6A5ACD, a different color; use #6331BF 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.

#6331BF is a cool purple color associated with luxury, creativity and mystery. 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 #8DBF31; it also sits naturally between #3146BF and #A931BF. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 39% · Green 19% · Blue 75%

Cyan 48% · Magenta 74% · Yellow 0% · Key 25%

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

Previews

CSS code for #6331BF

.text { color: #6331BF; }
.background { background-color: #6331BF; }
.border { border: 3px solid #6331BF; }
.text-rgb { color: rgb(99, 49, 191); }
.text-hsl { color: hsl(261, 59%, 47%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #6331BF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(99, 49, 191, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #6331BF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(99, 49, 191, 0.8); }

HTML: <p style="color:#6331BF">Text here</p> · <div style="background-color:#6331BF">Div content here</div>

Shades of #6331BF

Tints of #6331BF

Tones of #6331BF

Color harmonies

Complementary — #8DBF31:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #6331BF: #FFFFFF.

Semi-transparent (opacity) text on #6331BF

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 #6331BF 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 #6331BF 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

← #6331BE  ·  #6331C0 →

Frequently asked questions

What color is #6331BF?

#6331BF is Purple, a purple color (RGB 99, 49, 191). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #6331BF?

#6331BF is RGB 99, 49, 191 — HSL 261°, 59%, 47% — CMYK 48%, 74%, 0%, 25%.

What colors go with #6331BF?

Its complement is #8DBF31; analogous partners are #3146BF and #A931BF. It also appears in 6+ palettes in our collection.

Can I use #6331BF for text?

White text on #6331BF has a contrast ratio of 7.71:1 (passes WCAG AA); black text gives 2.72:1.