Color
#66ffd4
#66ffd4rgb(102, 255, 212)hsl(163, 100%, 70%)oklch(0.907 0.144 171.3)Colors that go with #66ffd4
Crimson, Deep Sky Blue and Taupe 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.
Crimson #dc143c
shippedCrimson is paired with #66ffd4 in 4 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #66ffd4: 4 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #66ffd4 in 4 real palettes, including Astro's brand system and Macaron, as the text colour against it.
Hot Pink #ff69b4
complementaryHot Pink sits directly opposite #66ffd4 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #66ffd4: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
shippedDesigners have shipped Steel Blue with #66ffd4: 3 real palettes, including Astro's brand system and Glacier, as the lead colour.
Plum #dda0dd
triadicshippedPlum completes a triad with #66ffd4 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Violet #ee82ee
split-complementViolet is a split-complement of #66ffd4: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #66ffd4
Tints & shades
Harmonies
Contrast
| #66ffd4 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.25:1 | fail | fail | fail | |
Aaon black | 16.82:1 | 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 #66ffd4 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
#66ffd4 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 #66ffd4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/66ffd4-a2beb9-d459b7-1f2b2d-e9f1eb?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