Color

#289aa9

#289aa9
hex#289aa9
rgbrgb(40, 154, 169)
hslhsl(187, 62%, 41%)
oklchoklch(0.632 0.099 208.2)
Closest name: Baltic (#279d9f)Relative luminance 0.2643

Colors that go with #289aa9

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.

Real palettes that use #289aa9

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a93728

#28a978 · #2859a9

#a9289a · #9aa928

Split-complementary

Open in tool →

#a92859 · #a97828

#7828a9 · #a93728 · #59a928

Contrast

#289aa9 as textRatioAAAA largeAAAFix
Aaon white
3.34:1failpassfail
  • AA: use #21808c as the text (4.63:1)
  • AAA: use #185e67 as the text (7.41:1)
  • AA: or shift the background to #262626 (4.53:1)
Aaon black
6.29:1passpassfail
  • AAA: use #2ba6b6 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #289aa9 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

#289aa9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #289aa9
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 #289aa9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/289aa9-a2b8be-df4e83-1f262d-e9f1ee?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