Color
Fluorescence
#89d178rgb(137, 209, 120)hsl(109, 49%, 65%)oklch(0.792 0.141 139.7)Colors that go with Fluorescence
Plum, Charcoal and Dark Olive Green 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.
Plum #dda0dd
complementaryshippedPlum sits directly opposite Fluorescence 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 Fluorescence: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to Fluorescence in 4 real palettes, including 7-Eleven's brand system and Undergrowth, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with Fluorescence: 4 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with Fluorescence in 5 real palettes, including Docker's brand system and Brilliant's brand system, as the supporting colour.
Slate Gray #708090
shipped4 real palettes, including Ledger Dark and Midnight Luxe put Slate Gray beside Fluorescence, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with Fluorescence in 16 real palettes, including Citrus Grove and WhatsApp's brand system, as the text colour against it.
Lilac #c8a2c8
split-complementshippedLilac is a split-complement of Fluorescence: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use Fluorescence
Tints & shades
Harmonies
Contrast
| Fluorescence as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.83:1 | fail | fail | fail | |
Aaon black | 11.46:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Fluorescence as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #89d178 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/89d178-a4bea2-7e4edf-1f2d23-eef1e9?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