Palettes / Colors / #643CDD

#643CDD — Purple

#643CDD 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 #643CDD 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.

#643CDD is a cool purple color associated with luxury, creativity and mystery. 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 #B4DD3C; it also sits naturally between #3C64DD and #B43CDD. 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 24% · Blue 87%

Cyan 55% · Magenta 73% · Yellow 0% · Key 13%

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

Previews

CSS code for #643CDD

.text { color: #643CDD; }
.background { background-color: #643CDD; }
.border { border: 3px solid #643CDD; }
.text-rgb { color: rgb(100, 60, 221); }
.text-hsl { color: hsl(255, 70%, 55%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #643CDD; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(100, 60, 221, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #643CDD; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(100, 60, 221, 0.8); }

HTML: <p style="color:#643CDD">Text here</p> · <div style="background-color:#643CDD">Div content here</div>

Shades of #643CDD

Tints of #643CDD

Tones of #643CDD

Color harmonies

Complementary — #B4DD3C:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #643CDD: #FFFFFF.

Semi-transparent (opacity) text on #643CDD

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 #643CDD 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 #643CDD 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

← #643CDC  ·  #643CDE →

Frequently asked questions

What color is #643CDD?

#643CDD is Purple, a purple color (RGB 100, 60, 221). Its closest standard named color is SlateBlue.

What is the RGB and HSL of #643CDD?

#643CDD is RGB 100, 60, 221 — HSL 255°, 70%, 55% — CMYK 55%, 73%, 0%, 13%.

What colors go with #643CDD?

Its complement is #B4DD3C; analogous partners are #3C64DD and #B43CDD. It also appears in 6+ palettes in our collection.

Can I use #643CDD for text?

White text on #643CDD has a contrast ratio of 6.50:1 (passes WCAG AA); black text gives 3.23:1.