Color

#398fac

#398fac
hex#398fac
rgbrgb(57, 143, 172)
hslhsl(195, 50%, 45%)
oklchoklch(0.61 0.092 223.8)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2349

Colors that go with #398fac

Charcoal, Copper and Crimson 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ac5639

#39ac8f · #3956ac

#ac398f · #8fac39

Split-complementary

Open in tool →

#ac3956 · #ac8f39

#8f39ac · #ac5639 · #56ac39

Contrast

#398fac as textRatioAAAA largeAAAFix
Aaon white
3.69:1failpassfail
  • AA: use #327c95 as the text (4.72:1)
  • AAA: use #255c6f as the text (7.4:1)
  • AA: or shift the background to #1c1c1c (4.62:1)
Aaon black
5.7:1passpassfail
  • AAA: use #44a1c1 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #398fac as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#398fac reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #398fac
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 #398fac and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/398fac-9cb5c4-df4e70-1f242d-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