Color

#4baff1

#4baff1
hex#4baff1
rgbrgb(75, 175, 241)
hslhsl(204, 86%, 62%)
oklchoklch(0.723 0.133 241.1)
Closest name: Cerulean (#55aaee)Relative luminance 0.3851

Colors that go with #4baff1

Charcoal, Dark Orange 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 →

#f18d4b

#4bf1e1 · #4b5bf1

#f14baf · #aff14b

Split-complementary

Open in tool →

#f14b5b · #f1e14b

#e14bf1 · #f18d4b · #5bf14b

Contrast

#4baff1 as textRatioAAAA largeAAAFix
Aaon white
2.41:1failfailfail
  • AA: use #0f7bc2 as the text (4.53:1)
  • AAA: use #0b5a8e as the text (7.32:1)
  • AA: or shift the background to #3d3d3d (4.5:1)
  • AAA: or shift the background to #1c1c1c (7.06:1)
Aaon black
8.7:1passpasspassPasses 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 #4baff1 as the background.

Brands using this color

Fonts for this mood

#4baff1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4baff1
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 #4baff1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4baff1-9cafc4-df4e5a-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