Color

#4978df

#4978df
hex#4978df
rgbrgb(73, 120, 223)
hslhsl(221, 70%, 58%)
oklchoklch(0.592 0.165 263.7)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.2018

Colors that go with #4978df

Charcoal, Copper 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 →

#dfaf49

#49c3df · #6449df

#df4978 · #78df49

Split-complementary

Open in tool →

#df6449 · #c3df49

#df49c3 · #dfaf49 · #49df64

Contrast

#4978df as textRatioAAAA largeAAAFix
Aaon white
4.17:1failpassfail
  • AA: use #3c6fdd as the text (4.66:1)
  • AAA: use #2152ba as the text (7.05:1)
  • AA: or shift the background to #0f0f0f (4.6:1)
Aaon black
5.04:1passpassfail
  • AAA: use #7095e6 as the text (7.13:1)

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

#4978df reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

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

tool url/palettes/new/4978df-9ca4c4-df6b4e-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