Color
#81eff3
#81eff3rgb(129, 239, 243)hsl(182, 83%, 73%)oklch(0.888 0.101 198.6)Colors that go with #81eff3
Charcoal, Deep Sky Blue and Midnight 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 text near-black for #81eff3: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #81eff3's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Midnight Blue #191970
shippedMidnight Blue is paired with #81eff3 in 4 real palettes, including Blue Mono and First Snow, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Sage Green #9caf88
shippedSage Green is paired with #81eff3 in 4 real palettes, including Pine & Birch and Stone, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Slate Gray #708090
shippedSlate Gray is paired with #81eff3 in 5 real palettes, including Ink Wash and Dusty Blue, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Dark Salmon #e9967a
complementaryDark Salmon sits directly opposite #81eff3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Plum #dda0dd
split-complementshippedPlum is a split-complement of #81eff3: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #81eff3
Tints & shades
Harmonies
Contrast
| #81eff3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.35:1 | fail | fail | fail | |
Aaon black | 15.57:1 | 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 #81eff3 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#81eff3 reads as cool, vivid, light. The font library is tagged with the same vocabulary:
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 #81eff3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81eff3-a2babe-d45990-1f272d-e9f1ee?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