Color

#4a91de

#4a91de
hex#4a91de
rgbrgb(74, 145, 222)
hslhsl(211, 69%, 58%)
oklchoklch(0.646 0.136 252.3)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2698

Colors that go with #4a91de

Charcoal, Amber and 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de964a

#4adbde · #4c4ade

#de4a91 · #91de4a

Split-complementary

Open in tool →

#de4c4a · #dbde4a

#de4adb · #de964a · #4ade4c

Contrast

#4a91de as textRatioAAAA largeAAAFix
Aaon white
3.28:1failpassfail
  • AA: use #2575cb as the text (4.68:1)
  • AAA: use #1c5a9b as the text (7.03:1)
  • AA: or shift the background to #262626 (4.61:1)
Aaon black
6.4:1passpassfail
  • AAA: use #5799e0 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 #4a91de as the background.

Brands using this color

Fonts for this mood

#4a91de reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4a91de
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 #4a91de and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4a91de-9cabc4-df534e-1f202d-e9f1f1?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