Color

#2fb5e9

#2fb5e9
hex#2fb5e9
rgbrgb(47, 181, 233)
hslhsl(197, 81%, 55%)
oklchoklch(0.726 0.132 229.8)
Closest name: Blue Bikini (#00bbee)Relative luminance 0.3954

Colors that go with #2fb5e9

Charcoal, Amber and Dark Orange 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 →

#e9642f

#2fe9c1 · #2f58e9

#e92fb5 · #b5e92f

Split-complementary

Open in tool →

#e92f58 · #e9c12f

#c12fe9 · #e9642f · #58e92f

Contrast

#2fb5e9 as textRatioAAAA largeAAAFix
Aaon white
2.36:1failfailfail
  • AA: use #127fab as the text (4.52:1)
  • AAA: use #0d5d7d as the text (7.29:1)
  • AA: or shift the background to #3d3d3d (4.61:1)
  • AAA: or shift the background to #1c1c1c (7.23:1)
Aaon black
8.91:1passpasspassPasses 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 #2fb5e9 as the background.

Brands using this color

Fonts for this mood

#2fb5e9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2fb5e9
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 #2fb5e9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2fb5e9-9cb4c4-df4e6b-1f232d-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