Color

#129dc4

#129dc4
hex#129dc4
rgbrgb(18, 157, 196)
hslhsl(193, 83%, 42%)
oklchoklch(0.648 0.119 224.3)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2823

Tints & shades

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

Harmonies

Complementary

Open in tool →

#c43912

#12c492 · #1245c4

#c4129d · #9dc412

Split-complementary

Open in tool →

#c41245 · #c49212

#9212c4 · #c43912 · #45c412

Contrast

#129dc4 as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #0f7f9f as the text (4.61:1)
  • AAA: use #0b5e75 as the text (7.31:1)
  • AA: or shift the background to #292929 (4.6:1)
Aaon black
6.65:1passpassfail
  • AAA: use #13a5cd 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 #129dc4 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

#129dc4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #129dc4
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #129dc4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/129dc4-a2b5be-df4e75-1f242d-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