Color

#3f8ea6

#3f8ea6
hex#3f8ea6
rgbrgb(63, 142, 166)
hslhsl(194, 45%, 45%)
oklchoklch(0.607 0.085 220.8)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2316

Colors that go with #3f8ea6

Charcoal, Copper and Chocolate 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.

Real palettes that use #3f8ea6

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a6573f

#3fa68b · #3f5ba6

#a63f8e · #8ea63f

Split-complementary

Open in tool →

#a63f5b · #a68b3f

#8b3fa6 · #a6573f · #5ba63f

Contrast

#3f8ea6 as textRatioAAAA largeAAAFix
Aaon white
3.73:1failpassfail
  • AA: use #387e94 as the text (4.59:1)
  • AAA: use #2a5f6f as the text (7.08:1)
  • AA: or shift the background to #1c1c1c (4.57:1)
Aaon black
5.63:1passpassfail
  • AAA: use #4aa0ba as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3f8ea6 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

#3f8ea6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3f8ea6
live endpoint

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.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3f8ea6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3f8ea6-9cb6c4-df4e72-1f242d-e9f1ef?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md