Color

#4290bd

#4290bd
hex#4290bd
rgbrgb(66, 144, 189)
hslhsl(202, 48%, 50%)
oklchoklch(0.624 0.102 236.9)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2478

Colors that go with #4290bd

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 →

#bd6f42

#42bdac · #4253bd

#bd4290 · #90bd42

Split-complementary

Open in tool →

#bd4253 · #bdac42

#ac42bd · #bd6f42 · #53bd42

Contrast

#4290bd as textRatioAAAA largeAAAFix
Aaon white
3.53:1failpassfail
  • AA: use #397ca2 as the text (4.59:1)
  • AAA: use #2a5c79 as the text (7.23:1)
  • AA: or shift the background to #212121 (4.57:1)
Aaon black
5.96:1passpassfail
  • AAA: use #599dc5 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4290bd 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

#4290bd reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4290bd
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 #4290bd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4290bd-9cb1c4-df4e5f-1f222d-e9f1f0?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