Color
#66fac1
#66fac1rgb(102, 250, 193)hsl(157, 94%, 69%)oklch(0.89 0.151 164.6)Colors that go with #66fac1
Charcoal, Crimson 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #66fac1: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #66fac1 in 4 real palettes, including Formula 1's brand system and Wise's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #66fac1 in 5 real palettes, including Astro's brand system and Macaron, as the text colour against it.
Hot Pink #ff69b4
complementaryHot Pink sits directly opposite #66fac1 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #66fac1: 3 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour.
Light Coral #f08080
split-complementLight Coral is a split-complement of #66fac1: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Violet #ee82ee
split-complementViolet is a split-complement of #66fac1: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Hunter Green #355e3b
shippedHunter Green is paired with #66fac1 in two real palettes: Canopy and Neon's brand system, as the lead colour.
Real palettes that use #66fac1
Tints & shades
Harmonies
Contrast
| #66fac1 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.31:1 | fail | fail | fail | |
Aaon black | 16.01:1 | 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 #66fac1 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 #66fac1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/66fac1-a2beb7-d459c4-1f2c2d-e9f1ea?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