Color

#2b9fbf

#2b9fbf
hex#2b9fbf
rgbrgb(43, 159, 191)
hslhsl(193, 63%, 46%)
oklchoklch(0.654 0.109 221.1)
Closest name: Blue Ocean (#009dc4)Relative luminance 0.2907

Colors that go with #2b9fbf

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 #2b9fbf

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bf4b2b

#2bbf95 · #2b55bf

#bf2b9f · #9fbf2b

Split-complementary

Open in tool →

#bf2b55 · #bf952b

#952bbf · #bf4b2b · #55bf2b

Contrast

#2b9fbf as textRatioAAAA largeAAAFix
Aaon white
3.08:1failpassfail
  • AA: use #23809a as the text (4.54:1)
  • AAA: use #195d70 as the text (7.39:1)
  • AA: or shift the background to #2b2b2b (4.59:1)
Aaon black
6.81:1passpassfail
  • AAA: use #2ca3c3 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b9fbf as the background.

Brands using this color

Fonts for this mood

#2b9fbf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b9fbf
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 #2b9fbf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b9fbf-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