Color
#81a239
#81a239rgb(129, 162, 57)hsl(79, 48%, 43%)oklch(0.666 0.137 124.9)Colors that go with #81a239
Charcoal, Medium Purple and 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 #81a239: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Medium Purple #9370db
complementaryshippedMedium Purple sits directly opposite #81a239 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped5 real palettes, including Spotify's brand system and Minecraft's brand system put Blue beside #81a239, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #81a239 in 4 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #81a239: 4 real palettes, including Spline's brand system and Unity's brand system, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #81a239 in 6 real palettes, including Console Light and Telehealth, as the lead colour.
Saddle Brown #8b4513
shippedDesigners have shipped Saddle Brown with #81a239: 4 real palettes, including Homestead and Cider, as the lead colour.
Taupe #483c32
shippedTaupe is paired with #81a239 in 20 real palettes, including Undergrowth and Acer's brand system, as the surface under it.
Real palettes that use #81a239
Tints & shades
Harmonies
Contrast
| #81a239 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.93:1 | fail | fail | fail | |
Aaon black | 7.16:1 | 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 #81a239 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 #81a239 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81a239-b2bea2-4e66df-232d1f-f1f0e9?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