Color
#18cd91
#18cd91rgb(24, 205, 145)hsl(160, 79%, 45%)oklch(0.752 0.159 163)Colors that go with #18cd91
Charcoal, Hot Pink 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #18cd91: softer than #000 and cool enough to feel like part of the same palette.
Hot Pink #ff69b4
complementaryshippedHot Pink sits directly opposite #18cd91 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 #18cd91: 4 real palettes, including Remix's brand system and Prime Video's brand system, as the lead colour.
Mustard Yellow #ffdb58
shipped4 real palettes, including Fresh Juice and Meadow put Mustard Yellow beside #18cd91, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18cd91 in 4 real palettes, including Docker's brand system and Khan Academy's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #18cd91 in 12 real palettes, including WhatsApp's brand system and Obsidian's brand system, as the supporting colour.
Light Coral #f08080
split-complementshippedLight Coral is a split-complement of #18cd91: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blue #0000ff
shipped3 real palettes, including Unity's brand system and Spotify's brand system put Blue beside #18cd91, as the supporting colour.
Real palettes that use #18cd91
Tints & shades
Harmonies
Contrast
| #18cd91 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.06:1 | fail | fail | fail | |
Aaon black | 10.18:1 | 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 #18cd91 as the background.
Brands using this color
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 #18cd91 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18cd91-a2beb8-d459be-1f2c2d-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