Color

#2c9fdd

#2c9fdd
hex#2c9fdd
rgbrgb(44, 159, 221)
hslhsl(201, 72%, 52%)
oklchoklch(0.669 0.134 238.1)
Closest name: Blue Burst (#309cd0)Relative luminance 0.3055

Colors that go with #2c9fdd

Charcoal, Tomato and Bronze 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 →

#dd6a2c

#2cddc2 · #2c47dd

#dd2c9f · #9fdd2c

Split-complementary

Open in tool →

#dd2c47 · #ddc22c

#c22cdd · #dd6a2c · #47dd2c

Contrast

#2c9fdd as textRatioAAAA largeAAAFix
Aaon white
2.95:1failfailfail
  • AA: use #1d7caf as the text (4.61:1)
  • AAA: use #155d84 as the text (7.17:1)
  • AA: or shift the background to #2e2e2e (4.6:1)
  • AAA: or shift the background to #000000 (7.11:1)
Aaon black
7.11:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2c9fdd as the background.

Brands using this color

Fonts for this mood

#2c9fdd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2c9fdd
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 #2c9fdd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2c9fdd-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