Color

#4cb1f0

#4cb1f0
hex#4cb1f0
rgbrgb(76, 177, 240)
hslhsl(203, 85%, 62%)
oklchoklch(0.728 0.131 239.6)
Closest name: Cerulean (#55aaee)Relative luminance 0.3927

Colors that go with #4cb1f0

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 →

#f08b4c

#4cf0dd · #4c5ff0

#f04cb1 · #b1f04c

Split-complementary

Open in tool →

#f04c5f · #f0dd4c

#dd4cf0 · #f08b4c · #5ff04c

Contrast

#4cb1f0 as textRatioAAAA largeAAAFix
Aaon white
2.37:1failfailfail
  • AA: use #0f7abd as the text (4.63:1)
  • AAA: use #0b5c8e as the text (7.15:1)
  • AA: or shift the background to #3d3d3d (4.58:1)
  • AAA: or shift the background to #1c1c1c (7.19:1)
Aaon black
8.85:1passpasspassPasses 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 #4cb1f0 as the background.

Brands using this color

Fonts for this mood

#4cb1f0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4cb1f0
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 #4cb1f0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4cb1f0-9cb0c4-df4e5d-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