Color
#66cc7e
#66cc7ergb(102, 204, 126)hsl(134, 50%, 60%)oklch(0.764 0.147 149.5)Colors that go with #66cc7e
Charcoal, Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #66cc7e: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shipped5 real palettes, including Minecraft's brand system and Unity's brand system put Blue beside #66cc7e, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #66cc7e in 4 real palettes, including Undergrowth and 7-Eleven's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #66cc7e: 4 real palettes, including Remix's brand system and Learning App, as the lead colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Citrus Grove put Mustard Yellow beside #66cc7e, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #66cc7e in 4 real palettes, including Docker's brand system and Brilliant's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #66cc7e in 20 real palettes, including WhatsApp's brand system and Chime's brand system, as the supporting colour.
Violet #ee82ee
complementaryViolet sits directly opposite #66cc7e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #66cc7e
Tints & shades
Harmonies
Contrast
| #66cc7e as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2:1 | fail | fail | fail | |
Aaon black | 10.5:1 | 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 #66cc7e as the background.
Brands using this color
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 #66cc7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/66cc7e-a2beac-b559d4-1f2d29-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