Color

#4c79eb

#4c79eb
hex#4c79eb
rgbrgb(76, 121, 235)
hslhsl(223, 80%, 61%)
oklchoklch(0.604 0.179 265.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2121

Colors that go with #4c79eb

Charcoal, Crimson and Copper 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 →

#ebbe4c

#4cc9eb · #6e4ceb

#eb4c79 · #79eb4c

Split-complementary

Open in tool →

#eb6e4c · #c9eb4c

#eb4cc9 · #ebbe4c · #4ceb6e

Contrast

#4c79eb as textRatioAAAA largeAAAFix
Aaon white
4.01:1failpassfail
  • AA: use #3a6be9 as the text (4.71:1)
  • AAA: use #174bcf as the text (7.13:1)
  • AA: or shift the background to #141414 (4.6:1)
Aaon black
5.24:1passpassfail
  • AAA: use #7195ef as the text (7.25:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4c79eb 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

#4c79eb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4c79eb
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 #4c79eb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4c79eb-9ca3c4-df704e-211f2d-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