Color

#129ade

#129ade
hex#129ade
rgbrgb(18, 154, 222)
hslhsl(200, 85%, 47%)
oklchoklch(0.654 0.144 239.3)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2851

Colors that go with #129ade

Charcoal, Orange Red and Amber 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 →

#de5612

#12debc · #1234de

#de129a · #9ade12

Split-complementary

Open in tool →

#de1234 · #debc12

#bc12de · #de5612 · #34de12

Contrast

#129ade as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #0f7cb3 as the text (4.61:1)
  • AAA: use #0b5c84 as the text (7.3:1)
  • AA: or shift the background to #2b2b2b (4.52:1)
Aaon black
6.7:1passpassfail
  • AAA: use #13a0e7 as the text (7.21:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/129ade-9cb2c4-df4e64-1f232d-e9f1f0?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