Color
#81be19
#81be19rgb(129, 190, 25)hsl(82, 77%, 42%)oklch(0.732 0.189 129.5)Colors that go with #81be19
Charcoal, Taupe and Violet 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 #81be19: its slight blue cast keeps type crisp beside a warm colour where pure #000 looks heavy.
Taupe #483c32
shippedTaupe is paired with #81be19 in 9 real palettes, including Acer's brand system and Minecraft's brand system, as the text colour against it.
Violet #ee82ee
complementaryViolet sits directly opposite #81be19 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 #81be19: 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 #81be19: 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 #81be19, as the accent.
Dark Olive Green #556b2f
shippedDark Olive Green shows up next to #81be19 in 3 real palettes, including Undergrowth and Forest Floor, as the supporting colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #81be19 in 3 real palettes, including Citrus Grove and Learning App, as the lead colour.
Real palettes that use #81be19
Tints & shades
Harmonies
Contrast
| #81be19 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.25:1 | fail | fail | fail | |
Aaon black | 9.31:1 | 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 #81be19 as the background.
Brands using this color
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 #81be19 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81be19-b0bea2-4e5fdf-222d1f-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