Color

#5291ef

#5291ef
hex#5291ef
rgbrgb(82, 145, 239)
hslhsl(216, 83%, 63%)
oklchoklch(0.659 0.155 258.3)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2828

Colors that go with #5291ef

Charcoal, Tomato 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 →

#efb052

#52dfef · #6252ef

#ef5291 · #91ef52

Split-complementary

Open in tool →

#ef6252 · #dfef52

#ef52df · #efb052 · #52ef62

Contrast

#5291ef as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #1f70ea as the text (4.6:1)
  • AAA: use #1153b6 as the text (7.15:1)
  • AA: or shift the background to #292929 (4.61:1)
Aaon black
6.66:1passpassfail
  • AAA: use #5c97f0 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5291ef 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

#5291ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5291ef
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 #5291ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5291ef-9ca7c4-df5f4e-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