Color

#4f6ff3

#4f6ff3
hex#4f6ff3
rgbrgb(79, 111, 243)
hslhsl(228, 87%, 63%)
oklchoklch(0.591 0.201 269.1)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.195

Colors that go with #4f6ff3

Charcoal, Crimson and Sea Green 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 →

#f3d24f

#4fc1f3 · #804ff3

#f34f6f · #6ff34f

Split-complementary

Open in tool →

#f3804f · #c1f34f

#f34fc1 · #f3d24f · #4ff380

Contrast

#4f6ff3 as textRatioAAAA largeAAAFix
Aaon white
4.29:1failpassfail
  • AA: use #4568f2 as the text (4.65:1)
  • AAA: use #113dee as the text (7.18:1)
  • AA: or shift the background to #0d0d0d (4.54:1)
Aaon black
4.9:1passpassfail
  • AAA: use #7992f6 as the text (7.26:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4f6ff3 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

#4f6ff3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4f6ff3
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 #4f6ff3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4f6ff3-9c9fc4-df7c4e-231f2d-e9eff1?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