Color

#398cac

#398cac
hex#398cac
rgbrgb(57, 140, 172)
hslhsl(197, 50%, 45%)
oklchoklch(0.603 0.093 226.9)
Closest name: Blue Moon (#3992a8)Relative luminance 0.226

Colors that go with #398cac

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 →

#ac5a39

#39ac93 · #3952ac

#ac398c · #8cac39

Split-complementary

Open in tool →

#ac3952 · #ac9339

#9339ac · #ac5a39 · #52ac39

Contrast

#398cac as textRatioAAAA largeAAAFix
Aaon white
3.8:1failpassfail
  • AA: use #337c99 as the text (4.68:1)
  • AAA: use #265d73 as the text (7.25:1)
  • AA: or shift the background to #1a1a1a (4.58:1)
Aaon black
5.52:1passpassfail
  • AAA: use #479fc2 as the text (7.01:1)

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

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

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

tool url/palettes/new/398cac-9cb4c4-df4e6b-1f232d-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