Color
#669c40
#669c40rgb(102, 156, 64)hsl(95, 42%, 43%)oklch(0.634 0.137 134.2)Colors that go with #669c40
Charcoal, Blue and Crimson 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 #669c40: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Blue #0000ff
shipped4 real palettes, including Spotify's brand system and Unity's brand system put Blue beside #669c40, as the accent.
Crimson #dc143c
shippedCrimson is paired with #669c40 in 5 real palettes, including DuckDuckGo's brand system and Five Guys's brand system, as the supporting colour.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #669c40 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #669c40: 5 real palettes, including Intel's brand system and Jack Daniel's's brand system, as the supporting colour.
Dodger Blue #1e90ff
triadicshippedDodger Blue completes a triad with #669c40 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Midnight Blue #191970
shipped4 real palettes, including Telehealth and Fintech Trust put Midnight Blue beside #669c40, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #669c40 in 5 real palettes, including Console Light and Telehealth, as the lead colour.
Real palettes that use #669c40
Tints & shades
Harmonies
Contrast
| #669c40 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.28:1 | fail | pass | fail | |
Aaon black | 6.39:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #669c40 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 #669c40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/669c40-aabea2-5d4edf-1f2d20-f0f1e9?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