Color
#66cc8a
#66cc8argb(102, 204, 138)hsl(141, 50%, 60%)oklch(0.767 0.135 153.5)Colors that go with #66cc8a
Charcoal, Dark Olive Green and Deep Sky Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #66cc8a: softer than #000 and cool enough to feel like part of the same palette.
Dark Olive Green #556b2f
shippedDark Olive Green is paired with #66cc8a in 4 real palettes, including Undergrowth and 7-Eleven's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #66cc8a in 4 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Mustard Yellow #ffdb58
shippedMustard Yellow is paired with #66cc8a in 4 real palettes, including Fresh Juice and Citrus Grove, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #66cc8a in 18 real palettes, including WhatsApp's brand system and Citrus Grove, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Violet #ee82ee
complementaryViolet sits directly opposite #66cc8a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #66cc8a: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shippedBlue is paired with #66cc8a in 3 real palettes, including Unity's brand system and Spotify's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #66cc8a
Tints & shades
Harmonies
Contrast
| #66cc8a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.99:1 | fail | fail | fail | |
Aaon black | 10.57:1 | 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 #66cc8a 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 #66cc8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/66cc8a-a2beaf-c459d4-1f2d2a-eaf1e9?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