Color
#3bb4e8
#3bb4e8rgb(59, 180, 232)hsl(198, 79%, 57%)oklch(0.726 0.128 231.2)Colors that go with #3bb4e8
Charcoal, Amber and Dark Orange 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 #3bb4e8: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #3bb4e8 in 5 real palettes, including Blueprint and Salesforce's brand system, as the accent.
Dark Orange #ff8c00
shippedDark Orange shows up next to #3bb4e8 in 4 real palettes, including Learning App and Elastic's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #3bb4e8: 6 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #3bb4e8 in 4 real palettes, including Terminal and Telehealth, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Kraken's brand system and Confluent's brand system put Midnight Blue beside #3bb4e8, as the lead colour.
Orange Red #ff4500
shippedOrange Red is paired with #3bb4e8 in 4 real palettes, including Cursor's brand system and Figma's brand system, as the lead colour.
Coral #ff7f50
complementaryCoral sits directly opposite #3bb4e8 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 #3bb4e8
Tints & shades
Harmonies
Contrast
| #3bb4e8 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.36:1 | fail | fail | fail | |
Aaon black | 8.88:1 | 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 #3bb4e8 as the background.
Brands using this color
Fonts for this mood
#3bb4e8 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 #3bb4e8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3bb4e8-9cb3c4-df4e69-1f232d-e9f1f0?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