Color
#3eb9ea
#3eb9eargb(62, 185, 234)hsl(197, 80%, 58%)oklch(0.739 0.127 229.1)Colors that go with #3eb9ea
Charcoal, Amber and 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 #3eb9ea: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #3eb9ea in 4 real palettes, including Blueprint and Salesforce's brand system, as the accent.
Blue #0000ff
shipped4 real palettes, including Warp's brand system and Uber's brand system put Blue beside #3eb9ea, as the supporting colour.
Dark Orange #ff8c00
shippedDark Orange shows up next to #3eb9ea in 4 real palettes, including Learning App and Elastic's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #3eb9ea: 6 real palettes, including Coca-Cola's brand system and UEFA's brand system, as the accent.
Midnight Blue #191970
shipped8 real palettes, including Kraken's brand system and Confluent's brand system put Midnight Blue beside #3eb9ea, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #3eb9ea in 7 real palettes, including Elastic's brand system and Confluent's brand system, as the accent.
Coral #ff7f50
complementaryCoral sits directly opposite #3eb9ea on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #3eb9ea
Tints & shades
Harmonies
Contrast
| #3eb9ea as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.25:1 | fail | fail | fail | |
Aaon black | 9.33:1 | 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 #3eb9ea as the background.
Brands using this color
Fonts for this mood
#3eb9ea 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 #3eb9ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3eb9ea-9cb4c4-df4e6b-1f232d-e9f1ef?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