Color
#18acc3
#18acc3rgb(24, 172, 195)hsl(188, 78%, 43%)oklch(0.685 0.116 212)Colors that go with #18acc3
Charcoal, Tomato and Amber 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 #18acc3: softer than #000 and cool enough to feel like part of the same palette.
Tomato #ff6347
complementaryshippedTomato sits directly opposite #18acc3 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #18acc3 in 4 real palettes, including Salesforce's brand system and Blueprint, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #18acc3: 7 real palettes, including Gopro's brand system and Coca-Cola's brand system, as the lead colour.
Dodger Blue #1e90ff
shippedDesigners have shipped Dodger Blue with #18acc3: 4 real palettes, including Figma's brand system and Venmo's brand system, as the accent.
Midnight Blue #191970
shipped9 real palettes, including Confluent's brand system and Ford's brand system put Midnight Blue beside #18acc3, as the lead colour.
Orange #ffa500
shipped4 real palettes, including Gopro's brand system and Mistral AI's brand system put Orange beside #18acc3, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #18acc3 in 6 real palettes, including Confluent's brand system and Elastic's brand system, as the supporting colour.
Real palettes that use #18acc3
Tints & shades
Harmonies
Contrast
| #18acc3 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.72:1 | fail | fail | fail | |
Aaon black | 7.73:1 | 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 #18acc3 as the background.
Brands using this color
Fonts for this mood
#18acc3 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 #18acc3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/18acc3-a2b7be-df4e81-1f252d-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