Color

#4978ca

#4978ca
hex#4978ca
rgbrgb(73, 120, 202)
hslhsl(218, 55%, 54%)
oklchoklch(0.579 0.137 260.8)
Closest name: Campanula (#3473b7)Relative luminance 0.1911

Colors that go with #4978ca

Charcoal, Sea Green 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 →

#ca9b49

#49b9ca · #5a49ca

#ca4978 · #78ca49

Split-complementary

Open in tool →

#ca5a49 · #b9ca49

#ca49b9 · #ca9b49 · #49ca5a

Contrast

#4978ca as textRatioAAAA largeAAAFix
Aaon white
4.35:1failpassfail
  • AA: use #4173c8 as the text (4.66:1)
  • AAA: use #2e579e as the text (7.06:1)
  • AA: or shift the background to #0a0a0a (4.55:1)
Aaon black
4.82:1passpassfail
  • AAA: use #7196d6 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4978ca 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

#4978ca reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4978ca
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 #4978ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4978ca-9ca6c4-df644e-201f2d-e9f0f1?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