Color
#a540c9
#a540c9rgb(165, 64, 201)hsl(284, 56%, 52%)oklch(0.568 0.213 315.8)Colors that go with #a540c9
Olive Drab, Sea Green and Charcoal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Olive Drab #6b8e23
complementaryOlive Drab sits directly opposite #a540c9 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #a540c9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #a540c9: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
shippedDesigners have shipped Denim with #a540c9: 3 real palettes, including Hasbro's brand system and Peacock, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #a540c9 in 3 real palettes, including Obsidian's brand system and Superhuman's brand system, as that palette's text colour.
Dark Cyan #008b8b
triadicshippedDark Cyan completes a triad with #a540c9 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Olive Green #808000
split-complementOlive Green is a split-complement of #a540c9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Light Sea Green #20b2aa
shippedLight Sea Green shows up next to #a540c9 in two real palettes: Taco Bell's brand system and Circuit, as the accent.
Real palettes that use #a540c9
Tints & shades
Harmonies
Contrast
| #a540c9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.03:1 | pass | pass | fail |
|
Aaon black | 4.18:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a540c9 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#a540c9 reads as cool, modern. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #a540c9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/a540c9-bc9fc1-b1cb62-2d1f2b-ebe9f1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md