Color

#1291ab

#1291ab
hex#1291ab
rgbrgb(18, 145, 171)
hslhsl(190, 81%, 37%)
oklchoklch(0.607 0.105 217)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2332

Colors that go with #1291ab

Charcoal, Copper and Crimson 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 →

#ab2b12

#12ab78 · #1245ab

#ab1291 · #91ab12

Split-complementary

Open in tool →

#ab1245 · #ab7812

#7812ab · #ab2b12 · #45ab12

Contrast

#1291ab as textRatioAAAA largeAAAFix
Aaon white
3.71:1failpassfail
  • AA: use #107e94 as the text (4.74:1)
  • AAA: use #0c5e6f as the text (7.38:1)
  • AA: or shift the background to #1c1c1c (4.6:1)
Aaon black
5.66:1passpassfail
  • AAA: use #14a5c2 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1291ab as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#1291ab reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1291ab
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 #1291ab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1291ab-a2b6be-df4e7c-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