Color
#81d99f
#81d99frgb(129, 217, 159)hsl(140, 54%, 68%)oklch(0.814 0.119 154)Colors that go with #81d99f
Plum, Blue 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.
Plum #dda0dd
complementaryshippedPlum sits directly opposite #81d99f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Uber's brand system and Unity's brand system put Blue beside #81d99f, as the accent.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #81d99f: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #81d99f in 4 real palettes, including Tiffany & Co.'s brand system and Wise's brand system, as the supporting colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Citrus Grove put Mustard Yellow beside #81d99f, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #81d99f in 4 real palettes, including Docker's brand system and Brilliant's brand system, as the supporting colour.
Slate Gray #708090
shipped5 real palettes, including Ledger Dark and Still Water put Slate Gray beside #81d99f, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #81d99f in 26 real palettes, including Rain Garden and Mint Chip, as the text colour against it.
Real palettes that use #81d99f
Tints & shades
Harmonies
Contrast
| #81d99f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.7:1 | fail | fail | fail | |
Aaon black | 12.36:1 | 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 #81d99f 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 #81d99f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81d99f-a2beaf-c259d4-1f2d2a-ebf1e9?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