Color
#42f5ef
#42f5efrgb(66, 245, 239)hsl(178, 90%, 61%)oklch(0.883 0.139 191.5)Colors that go with #42f5ef
Charcoal, 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #42f5ef: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is #42f5ef's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Taupe #483c32
shippedTaupe is paired with #42f5ef in 8 real palettes, including Astro's brand system and Mint Chip, as the text colour against it.
Light Coral #f08080
complementaryLight Coral sits directly opposite #42f5ef on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with #42f5ef in 3 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Light Pink #ffb6c1
shippedLight Pink shows up next to #42f5ef in 3 real palettes, including Macaron and Pastel Pop, as the lead colour.
Steel Blue #4682b4
shippedDesigners have shipped Steel Blue with #42f5ef: 3 real palettes, including Astro's brand system and Glacier, as the lead colour.
Coral #ff7f50
split-complementCoral is a split-complement of #42f5ef: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #42f5ef
Tints & shades
Harmonies
Contrast
| #42f5ef as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.35:1 | fail | fail | fail | |
Aaon black | 15.54:1 | 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 #42f5ef 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 #42f5ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/42f5ef-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