Color
#18d3dc
#18d3dcrgb(24, 211, 220)hsl(183, 80%, 48%)oklch(0.789 0.132 200.4)Colors that go with #18d3dc
Charcoal, Light Coral and Crimson 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 #18d3dc: softer than #000 and cool enough to feel like part of the same palette.
Light Coral #f08080
complementaryshippedLight Coral sits directly opposite #18d3dc 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 #18d3dc in 4 real palettes, including Riot Games's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #18d3dc: 5 real palettes, including Patreon's brand system and Opensea's brand system, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18d3dc in 5 real palettes, including Docker's brand system and Telehealth, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #18d3dc in 12 real palettes, including Crayon Box and Boeing's brand system, as the text colour against it.
Wheat #f5deb3
shippedDesigners have shipped Wheat with #18d3dc: 4 real palettes, including Oatly's brand system and Mint Chip, as the supporting colour.
Dark Orange #ff8c00
split-complementshippedDark Orange is a split-complement of #18d3dc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #18d3dc
Tints & shades
Harmonies
Contrast
| #18d3dc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.84:1 | fail | fail | fail | |
Aaon black | 11.39:1 | 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 #18d3dc as the background.
Brands using this color
Fonts for this mood
#18d3dc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
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 #18d3dc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18d3dc-a2b9be-d4598e-1f262d-e9f1ee?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