Color
#b21590
#b21590rgb(178, 21, 144)hsl(313, 79%, 39%)oklch(0.522 0.216 339.7)Colors that go with #b21590
Denim, 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.
Denim #1560bd
shippedDesigners have shipped Denim with #b21590: 4 real palettes, including Peacock and Hasbro's brand system, as the supporting colour.
Sea Green #2e8b57
complementarySea Green sits directly opposite #b21590 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 #b21590: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Teal #008080
split-complementTeal is a split-complement of #b21590: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Olive Drab #6b8e23
split-complementOlive Drab is a split-complement of #b21590: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Crimson #dc143c
analogousshippedCrimson is #b21590's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Orange #ffa500
shippedTwo real palettes: Rippling's brand system and Sunset Boulevard put Orange beside #b21590, as the lead colour.
Olive Green #808000
triadicOlive Green completes a triad with #b21590 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Real palettes that use #b21590
Tints & shades
Harmonies
Contrast
| #b21590 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.17:1 | pass | pass | fail |
|
Aaon black | 3.4:1 | 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 #b21590 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
#b21590 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 #b21590 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/b21590-c19fb5-7ecb62-2d1f24-efe9f1?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