Color
#3fa51d
#3fa51drgb(63, 165, 29)hsl(105, 70%, 38%)oklch(0.637 0.191 139.6)Colors that go with #3fa51d
Medium Orchid, Charcoal and Dodger 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.
Medium Orchid #ba55d3
complementaryMedium Orchid sits directly opposite #3fa51d on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the body-text near-black for #3fa51d: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Dodger Blue #1e90ff
triadicshippedDodger Blue completes a triad with #3fa51d — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Medium Slate Blue #7b68ee
split-complementMedium Slate Blue is a split-complement of #3fa51d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Deep Pink #ff1493
split-complementDeep Pink is a split-complement of #3fa51d: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Dark Orange #ff8c00
shippedDark Orange is paired with #3fa51d in two real palettes: Playground and Learning App, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #3fa51d in two real palettes: Telehealth and Fintech Trust, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3fa51d in two real palettes: Console Light and Telehealth, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #3fa51d
Tints & shades
Harmonies
Contrast
| #3fa51d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.18:1 | fail | pass | fail | |
Aaon black | 6.61:1 | 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 #3fa51d 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 #3fa51d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3fa51d-a6bea2-754edf-1f2d22-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