Color
#3fa121
#3fa121rgb(63, 161, 33)hsl(106, 66%, 38%)oklch(0.627 0.184 139.7)Colors that go with #3fa121
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 #3fa121: 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 Instacart's brand system put Blue beside #3fa121, as the accent.
Crimson #dc143c
shippedCrimson is paired with #3fa121 in 4 real palettes, including DuckDuckGo's brand system and Coinbase's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #3fa121: 5 real palettes, including Xbox's brand system and Intel's brand system, as the supporting colour.
Dodger Blue #1e90ff
triadicshippedDodger Blue completes a triad with #3fa121 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3fa121 in 5 real palettes, including Console Light and Telehealth, as the lead colour.
Taupe #483c32
shippedTaupe is paired with #3fa121 in 4 real palettes, including Instacart's brand system and Meadow, as the lead colour.
Medium Orchid #ba55d3
complementaryMedium Orchid sits directly opposite #3fa121 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 #3fa121
Tints & shades
Harmonies
Contrast
| #3fa121 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.32:1 | fail | pass | fail | |
Aaon black | 6.33:1 | 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 #3fa121 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 #3fa121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3fa121-a5bea2-774edf-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