Color
#540b6a
#540b6argb(84, 11, 106)hsl(286, 81%, 23%)oklch(0.337 0.153 316.2)Colors that go with #540b6a
Tomato, Forest 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.
Tomato #ff6347
shipped4 real palettes, including FedEx's brand system and dbt Labs's brand system put Tomato beside #540b6a, as the supporting colour.
Forest Green #228b22
complementaryForest Green sits directly opposite #540b6a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #540b6a: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #540b6a in 3 real palettes, including Lenovo's brand system and Casper Sleep's brand system, as the supporting colour.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #540b6a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Olive Green #808000
split-complementOlive Green is a split-complement of #540b6a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Denim #1560bd
shippedDesigners have shipped Denim with #540b6a: two real palettes: Hinge's brand system and Slack's brand system, as the accent.
Mauve #e0b0ff
shippedMauve shows up next to #540b6a in two real palettes: Lavender Haze and Ledger's brand system, as the supporting colour.
Real palettes that use #540b6a
Tints & shades
Harmonies
Contrast
| #540b6a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.86:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.63:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #540b6a 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
#540b6a reads as cool, vivid, dark. 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 #540b6a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/540b6a-bd9fc1-adcb62-2d1f2a-ece9f1?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