Color
#399ca7
#399ca7rgb(57, 156, 167)hsl(186, 49%, 44%)oklch(0.64 0.091 205.5)Colors that go with #399ca7
Charcoal, Orange 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 #399ca7: softer than #000 and cool enough to feel like part of the same palette.
Orange Red #ff4500
complementaryshippedOrange Red sits directly opposite #399ca7 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Copper #b87333
shippedDesigners have shipped Copper with #399ca7: 5 real palettes, including Dusk and Clean Beauty, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #399ca7: 7 real palettes, including Peacock and Gopro's brand system, as the supporting colour.
Midnight Blue #191970
shipped9 real palettes, including Ford's brand system and Tide Pool put Midnight Blue beside #399ca7, as the accent.
Orange #ffa500
shipped4 real palettes, including Gopro's brand system and Campus put Orange beside #399ca7, as the accent.
Royal Blue #4169e1
shippedRoyal Blue is paired with #399ca7 in 5 real palettes, including Confluent's brand system and Elastic's brand system, as the supporting colour.
Taupe #483c32
shippedTaupe is paired with #399ca7 in 16 real palettes, including Still Water and Rain Garden, as that palette's text colour.
Real palettes that use #399ca7
Tints & shades
Harmonies
Contrast
| #399ca7 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.24:1 | fail | pass | fail | |
Aaon black | 6.49:1 | 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 #399ca7 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
#399ca7 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 #399ca7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/399ca7-a2b8be-df4e86-1f262d-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