Color

#4e90a6

#4e90a6
hex#4e90a6
rgbrgb(78, 144, 166)
hslhsl(195, 36%, 48%)
oklchoklch(0.618 0.075 221.9)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2432

Colors that go with #4e90a6

Charcoal, Copper and Cobalt Blue 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.

Real palettes that use #4e90a6

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#a6644e

#4ea690 · #4e64a6

#a64e90 · #90a64e

Split-complementary

Open in tool →

#a64e64 · #a6904e

#904ea6 · #a6644e · #64a64e

Contrast

#4e90a6 as textRatioAAAA largeAAAFix
Aaon white
3.58:1failpassfail
  • AA: use #457e92 as the text (4.51:1)
  • AAA: use #335d6c as the text (7.18:1)
  • AA: or shift the background to #1f1f1f (4.6:1)
Aaon black
5.86:1passpassfail
  • AAA: use #5f9fb4 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4e90a6 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

#4e90a6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4e90a6
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 #4e90a6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4e90a6-9cb5c4-df4e70-1f242d-e9f1ef?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