Color

#2b9cda

#2b9cda
hex#2b9cda
rgbrgb(43, 156, 218)
hslhsl(201, 70%, 51%)
oklchoklch(0.66 0.133 238.6)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2935

Colors that go with #2b9cda

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 →

#da682b

#2bdabf · #2b45da

#da2b9c · #9cda2b

Split-complementary

Open in tool →

#da2b45 · #dabf2b

#bf2bda · #da682b · #45da2b

Contrast

#2b9cda as textRatioAAAA largeAAAFix
Aaon white
3.06:1failpassfail
  • AA: use #1f7bad as the text (4.67:1)
  • AAA: use #175d82 as the text (7.18:1)
  • AA: or shift the background to #2b2b2b (4.63:1)
Aaon black
6.87:1passpassfail
  • AAA: use #2f9eda as the text (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2b9cda as the background.

Brands using this color

Fonts for this mood

#2b9cda reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b9cda
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 #2b9cda and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b9cda-9cb1c4-df4e62-1f222d-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