Color

#129bba

#129bba
hex#129bba
rgbrgb(18, 155, 186)
hslhsl(191, 82%, 40%)
oklchoklch(0.638 0.113 219.3)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2712

Colors that go with #129bba

Charcoal, Amber and Cobalt Blue 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 #129bba

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ba3112

#12ba85 · #1247ba

#ba129b · #9bba12

Split-complementary

Open in tool →

#ba1247 · #ba8512

#8512ba · #ba3112 · #47ba12

Contrast

#129bba as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #0f8099 as the text (4.6:1)
  • AAA: use #0b6174 as the text (7.06:1)
  • AA: or shift the background to #262626 (4.63:1)
Aaon black
6.42:1passpassfail
  • AAA: use #13a3c3 as the text (7.05:1)

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

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

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

tool url/palettes/new/129bba-a2b6be-df4e7a-1f252d-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