Color
#b11ff9
#b11ff9rgb(177, 31, 249)hsl(280, 95%, 55%)oklch(0.594 0.286 309.7)Colors that go with #b11ff9
Olive Drab, Charcoal and Denim 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 #b11ff9 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 #b11ff9: softer than #000 and cool enough to feel like part of the same palette.
Denim #1560bd
shippedDesigners have shipped Denim with #b11ff9: 3 real palettes, including Hasbro's brand system and Linkedin's brand system, as the supporting colour.
Medium Slate Blue #7b68ee
analogousshippedMedium Slate Blue is #b11ff9's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Dark Cyan #008b8b
triadicshippedDark Cyan completes a triad with #b11ff9 — 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 #b11ff9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sea Green #2e8b57
split-complementSea Green is a split-complement of #b11ff9: 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 #b11ff9 in two real palettes: Taco Bell's brand system and Circuit, as the accent.
Real palettes that use #b11ff9
Tints & shades
Harmonies
Contrast
| #b11ff9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.74:1 | pass | pass | fail |
|
Aaon black | 4.43:1 | 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 #b11ff9 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
#b11ff9 reads as cool, vivid, technical. 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 #b11ff9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b11ff9-b99fc1-b8cb62-2d1f2c-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