Palettes / Colors / #643EA3

#643EA3 — Muted Purple

#643EA3 is a purple color we call Muted Purple, closest to the named color DarkSlateBlue (#483D8B). It belongs to the purple family.

Color name

Closest CSS keyword: darkslateblue (#483D8B) — not an exact match. CSS darkslateblue gives you #483D8B, a different color; use #643EA3 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.

#643EA3 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 #7CA33E; it also sits naturally between #3E49A3 and #973EA3. 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 64%

Cyan 39% · Magenta 62% · Yellow 0% · Key 36%

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

Previews

CSS code for #643EA3

.text { color: #643EA3; }
.background { background-color: #643EA3; }
.border { border: 3px solid #643EA3; }
.text-rgb { color: rgb(100, 62, 163); }
.text-hsl { color: hsl(263, 45%, 44%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #643EA3; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(100, 62, 163, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #643EA3; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(100, 62, 163, 0.8); }

HTML: <p style="color:#643EA3">Text here</p> · <div style="background-color:#643EA3">Div content here</div>

Shades of #643EA3

Tints of #643EA3

Tones of #643EA3

Color harmonies

Complementary — #7CA33E:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #643EA3: #FFFFFF.

Semi-transparent (opacity) text on #643EA3

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 #643EA3 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 #643EA3 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

← #643EA2  ·  #643EA4 →

Frequently asked questions

What color is #643EA3?

#643EA3 is Muted Purple, a purple color (RGB 100, 62, 163). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #643EA3?

#643EA3 is RGB 100, 62, 163 — HSL 263°, 45%, 44% — CMYK 39%, 62%, 0%, 36%.

What colors go with #643EA3?

Its complement is #7CA33E; analogous partners are #3E49A3 and #973EA3. It also appears in 6+ palettes in our collection.

Can I use #643EA3 for text?

White text on #643EA3 has a contrast ratio of 7.61:1 (passes WCAG AA); black text gives 2.76:1.