Color

#4a78ed

#4a78ed
hex#4a78ed
rgbrgb(74, 120, 237)
hslhsl(223, 82%, 61%)
oklchoklch(0.602 0.184 265.2)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.21

Colors that go with #4a78ed

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 →

#edbf4a

#4acaed · #6d4aed

#ed4a78 · #78ed4a

Split-complementary

Open in tool →

#ed6d4a · #caed4a

#ed4aca · #edbf4a · #4aed6d

Contrast

#4a78ed as textRatioAAAA largeAAAFix
Aaon white
4.04:1failpassfail
  • AA: use #3c6eec as the text (4.53:1)
  • AAA: use #154ad1 as the text (7.16:1)
  • AA: or shift the background to #141414 (4.56:1)
Aaon black
5.2:1passpassfail
  • AAA: use #6f94f1 as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4a78ed 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

#4a78ed reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4a78ed
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 #4a78ed and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4a78ed-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