Color
#309ca6
#309ca6rgb(48, 156, 166)hsl(185, 55%, 42%)oklch(0.637 0.095 204.1)Colors that go with #309ca6
Charcoal, Red and Copper 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 #309ca6: softer than #000 and cool enough to feel like part of the same palette.
Red #ff0000
complementaryshippedRed sits directly opposite #309ca6 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedCopper is paired with #309ca6 in 5 real palettes, including Dusk and Clean Beauty, as the accent — a combination designers have actually shipped, not a computed rotation.
Denim #1560bd
shippedDenim is paired with #309ca6 in 6 real palettes, including Peacock and Dusk, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Midnight Blue #191970
shippedMidnight Blue is paired with #309ca6 in 8 real palettes, including Ford's brand system and Tide Pool, as the accent — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #309ca6 in 13 real palettes, including Still Water and Rain Garden, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Chocolate #d2691e
split-complementshippedChocolate is a split-complement of #309ca6: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Blush Pink #e8b4b8
shippedBlush Pink is paired with #309ca6 in 3 real palettes, including Rain Garden and Estate, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #309ca6
Tints & shades
Harmonies
Contrast
| #309ca6 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.27:1 | fail | pass | fail | |
Aaon black | 6.43:1 | pass | pass | fail |
|
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #309ca6 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Fonts for this mood
#309ca6 reads as cool, modern. 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 #309ca6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/309ca6-a2b8be-df4e88-1f262d-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