Color
#b309ab
#b309abrgb(179, 9, 171)hsl(303, 90%, 37%)oklch(0.535 0.239 330.8)Colors that go with #b309ab
Sea Green, 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.
Sea Green #2e8b57
complementarySea Green sits directly opposite #b309ab 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 body-text near-black for #b309ab: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Denim #1560bd
shippedDesigners have shipped Denim with #b309ab: 3 real palettes, including Peacock and Hasbro's brand system, as the supporting colour.
Teal #008080
split-complementTeal is a split-complement of #b309ab: 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 #b309ab: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue Violet #8a2be2
analogousBlue Violet is #b309ab's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Crimson #dc143c
shippedCrimson is paired with #b309ab in The Ordinary's brand system, as the supporting colour.
Dark Cyan #008b8b
shippedDesigners have shipped Dark Cyan with #b309ab: Peacock, as the lead colour.
Real palettes that use #b309ab
Tints & shades
Harmonies
Contrast
| #b309ab as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 5.93:1 | pass | pass | fail |
|
Aaon black | 3.54:1 | 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 #b309ab 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
#b309ab reads as warm, vivid, playful. 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 #b309ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b309ab-c19fbb-8fcb62-2d1f26-eee9f1?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