Color
#81fdf9
#81fdf9rgb(129, 253, 249)hsl(178, 97%, 75%)oklch(0.922 0.112 192.6)Colors that go with #81fdf9
Charcoal, Deep Sky Blue and Slate Gray 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 #81fdf9: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #81fdf9's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Slate Gray #708090
shipped4 real palettes, including Ledger Dark and Ink Wash put Slate Gray beside #81fdf9, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #81fdf9 in 12 real palettes, including Astro's brand system and Mint Chip, as the text colour against it.
Light Coral #f08080
complementaryLight Coral sits directly opposite #81fdf9 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 #81fdf9: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #81fdf9: 3 real palettes, including Blue Mono and Blueprint, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #81fdf9 in 3 real palettes, including Formula 1's brand system and Frost & Ember, as the supporting colour.
Real palettes that use #81fdf9
Tints & shades
Harmonies
Contrast
| #81fdf9 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.21:1 | fail | fail | fail | |
Aaon black | 17.35:1 | 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 #81fdf9 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
#81fdf9 reads as vivid, light, clean. 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 #81fdf9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/81fdf9-a2bcbe-d45999-1f282d-e9f1ed?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