Color
#18fb91
#18fb91rgb(24, 251, 145)hsl(152, 97%, 54%)oklch(0.869 0.214 154.4)Colors that go with #18fb91
Violet, Charcoal and Deep Sky 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.
Violet #ee82ee
complementaryViolet sits directly opposite #18fb91 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 #18fb91: softer than #000 and cool enough to feel like part of the same palette.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #18fb91: 3 real palettes, including Prime Video's brand system and Remix's brand system, as the supporting colour.
Light Coral #f08080
split-complementLight Coral is a split-complement of #18fb91: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Plum #dda0dd
split-complementPlum is a split-complement of #18fb91: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Yellow Green #9acd32
analogousshippedYellow Green is #18fb91's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Crimson #dc143c
shippedCrimson is paired with #18fb91 in two real palettes: Wise's brand system and Formula 1's brand system, as the accent.
Red #ff0000
shippedRed is paired with #18fb91 in two real palettes: Gatorade's brand system and Wise's brand system, as the supporting colour.
Real palettes that use #18fb91
Tints & shades
Harmonies
Contrast
| #18fb91 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.38:1 | fail | fail | fail | |
Aaon black | 15.25:1 | 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 #18fb91 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 #18fb91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18fb91-a2beb4-d459ce-1f2d2d-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