Color

#2fa5f9

#2fa5f9
hex#2fa5f9
rgbrgb(47, 165, 249)
hslhsl(205, 94%, 58%)
oklchoklch(0.698 0.159 245.2)
Closest name: Cerulean (#55aaee)Relative luminance 0.3435

Colors that go with #2fa5f9

Charcoal, Medium Sea Green and Tomato 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 →

#f9832f

#2ff9e8 · #2f40f9

#f92fa5 · #a5f92f

Split-complementary

Open in tool →

#f92f40 · #f9e82f

#e82ff9 · #f9832f · #40f92f

Contrast

#2fa5f9 as textRatioAAAA largeAAAFix
Aaon white
2.67:1failfailfail
  • AA: use #0679cb as the text (4.56:1)
  • AAA: use #055b99 as the text (7.09:1)
  • AA: or shift the background to #363636 (4.53:1)
  • AAA: or shift the background to #121212 (7.02:1)
Aaon black
7.87:1passpasspassPasses 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 #2fa5f9 as the background.

Brands using this color

Fonts for this mood

#2fa5f9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2fa5f9
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 #2fa5f9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2fa5f9-9cafc4-df4e58-1f212d-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