Color
#66bb0c
#66bb0crgb(102, 187, 12)hsl(89, 88%, 39%)oklch(0.71 0.203 134.5)Colors that go with #66bb0c
Charcoal, Royal Blue and Taupe 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 #66bb0c: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Royal Blue #4169e1
shippedRoyal Blue is paired with #66bb0c in 4 real palettes, including Brilliant's brand system and Console Light, as the accent.
Taupe #483c32
shippedTaupe is paired with #66bb0c in 8 real palettes, including Acer's brand system and Meadow, as the text colour against it.
Orchid #da70d6
complementaryOrchid sits directly opposite #66bb0c on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Hot Pink #ff69b4
split-complementshippedHot Pink is a split-complement of #66bb0c: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
split-complementshippedCornflower Blue is a split-complement of #66bb0c: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped3 real palettes, including Minecraft's brand system and Spotify's brand system put Blue beside #66bb0c, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #66bb0c in 3 real palettes, including Learning App and Playground, as the accent.
Real palettes that use #66bb0c
Tints & shades
Harmonies
Contrast
| #66bb0c as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.42:1 | fail | fail | fail | |
Aaon black | 8.68:1 | 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 #66bb0c 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 #66bb0c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/66bb0c-adbea2-4e4edf-212d1f-f1f1e9?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