Color

#129cca

#129cca
hex#129cca
rgbrgb(18, 156, 202)
hslhsl(195, 84%, 43%)
oklchoklch(0.648 0.124 228.6)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2817

Colors that go with #129cca

Charcoal, Amber and 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 #129cca

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ca4012

#12ca9c · #1240ca

#ca129c · #9cca12

Split-complementary

Open in tool →

#ca1240 · #ca9c12

#9c12ca · #ca4012 · #40ca12

Contrast

#129cca as textRatioAAAA largeAAAFix
Aaon white
3.17:1failpassfail
  • AA: use #0e7fa4 as the text (4.57:1)
  • AAA: use #0b5e7a as the text (7.25:1)
  • AA: or shift the background to #292929 (4.6:1)
Aaon black
6.63:1passpassfail
  • AAA: use #12a3d3 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 #129cca as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/129cca-9cb5c4-df4e70-1f242d-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