Color
#18aa99
#18aa99rgb(24, 170, 153)hsl(173, 75%, 38%)oklch(0.664 0.115 182.2)Colors that go with #18aa99
Charcoal, Crimson 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 #18aa99: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
shippedCrimson is paired with #18aa99 in 4 real palettes, including Diner and DuckDuckGo's brand system, as the lead colour.
Midnight Blue #191970
shipped6 real palettes, including Fintech Trust and Ford's brand system put Midnight Blue beside #18aa99, as the text colour against it.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18aa99 in 6 real palettes, including Khan Academy's brand system and Confluent's brand system, as the accent.
Taupe #483c32
shippedTaupe is paired with #18aa99 in 11 real palettes, including Resort and Rain Garden, as the text colour against it.
Deep Pink #ff1493
complementaryDeep Pink sits directly opposite #18aa99 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Orange Red #ff4500
split-complementshippedOrange Red is a split-complement of #18aa99: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blush Pink #e8b4b8
shipped3 real palettes, including Rain Garden and Estate put Blush Pink beside #18aa99, as the accent.
Real palettes that use #18aa99
Tints & shades
Harmonies
Contrast
| #18aa99 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.9:1 | fail | fail | fail | |
Aaon black | 7.25:1 | 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 #18aa99 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 #18aa99 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18aa99-a2bebe-d459a3-1f292d-e9f1ec?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