Color

#4f99de

#4f99de
hex#4f99de
rgbrgb(79, 153, 222)
hslhsl(209, 68%, 59%)
oklchoklch(0.666 0.127 248.8)
Closest name: Blue Bay (#619ad6)Relative luminance 0.2972

Colors that go with #4f99de

Charcoal, Peru 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 →

#de944f

#4fdedb · #4f52de

#de4f99 · #99de4f

Split-complementary

Open in tool →

#de4f52 · #dedb4f

#db4fde · #de944f · #52de4f

Contrast

#4f99de as textRatioAAAA largeAAAFix
Aaon white
3.02:1failpassfail
  • AA: use #2678c5 as the text (4.59:1)
  • AAA: use #1d5b96 as the text (7.03:1)
  • AA: or shift the background to #2b2b2b (4.68:1)
Aaon black
6.94:1passpassfail
  • AAA: use #549bde as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4f99de as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#4f99de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4f99de
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 #4f99de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4f99de-9cacc4-df4e4e-1f212d-e9f1f1?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