Color

#129aaf

#129aaf
hex#129aaf
rgbrgb(18, 154, 175)
hslhsl(188, 81%, 38%)
oklchoklch(0.631 0.107 212)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2633

Colors that go with #129aaf

Charcoal, Copper and Orange Red 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 #129aaf

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af2712

#12af76 · #124caf

#af129a · #9aaf12

Split-complementary

Open in tool →

#af124c · #af7612

#7612af · #af2712 · #4caf12

Contrast

#129aaf as textRatioAAAA largeAAAFix
Aaon white
3.35:1failpassfail
  • AA: use #108294 as the text (4.52:1)
  • AAA: use #0c626f as the text (7.02:1)
  • AA: or shift the background to #262626 (4.52:1)
Aaon black
6.27:1passpassfail
  • AAA: use #14a7bd as the text (7.29:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #129aaf 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

#129aaf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #129aaf
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 #129aaf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/129aaf-a2b7be-df4e81-1f252d-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