Color

#1fadef

#1fadef
hex#1fadef
rgbrgb(31, 173, 239)
hslhsl(199, 87%, 53%)
oklchoklch(0.708 0.146 236.1)
Closest name: Cerulean (#55aaee)Relative luminance 0.3641

Colors that go with #1fadef

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ef611f

#1fefc9 · #1f45ef

#ef1fad · #adef1f

Split-complementary

Open in tool →

#ef1f45 · #efc91f

#c91fef · #ef611f · #45ef1f

Contrast

#1fadef as textRatioAAAA largeAAAFix
Aaon white
2.54:1failfailfail
  • AA: use #0c7cb0 as the text (4.64:1)
  • AAA: use #095e86 as the text (7.1:1)
  • AA: or shift the background to #383838 (4.62:1)
  • AAA: or shift the background to #171717 (7.07:1)
Aaon black
8.28:1passpasspassPasses 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 #1fadef as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1fadef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1fadef
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 #1fadef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1fadef-9cb3c4-df4e66-1f232d-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