Meadow
Open in tool →Fresh green, buttercup and a wildflower pink — spring at full saturation; the leaf-dark text does the anchoring.
Color
#66bb44
#66bb44
hex
#66bb44rgb
rgb(102, 187, 68)hsl
hsl(103, 47%, 50%)oklch
oklch(0.713 0.176 138)Closest name: Exit Light (#55bb33)Relative luminance 0.3878
Colors that go with #66bb44
Charcoal, Dark Olive Green and Royal 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 body-text near-black for #66bb44: 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 #66bb44 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #66bb44 in 5 real palettes, including Brilliant's brand system and Console Light, as the accent.
Taupe #483c32
shippedTaupe is paired with #66bb44 in 11 real palettes, including Meadow and Minecraft's brand system, as the text colour against it.
Orchid #da70d6
complementaryOrchid sits directly opposite #66bb44 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 #66bb44: 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 #66bb44: 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 #66bb44, as the accent.
Real palettes that use #66bb44
Tints & shades
Harmonies
Contrast
| #66bb44 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.4:1 | fail | fail | fail | |
Aaon black | 8.76:1 | 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 #66bb44 as the background.
Brands using this color
Palettes built around it
mcpConnect your agent — build around #66bb44
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #66bb44 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/66bb44-a6bea2-704edf-1f2d21-eff1e9?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