Color

#5799ef

#5799ef
hex#5799ef
rgbrgb(87, 153, 239)
hslhsl(214, 83%, 64%)
oklchoklch(0.678 0.145 255.8)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.3104

Colors that go with #5799ef

Charcoal, Peru 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 →

#efad57

#57e5ef · #6157ef

#ef5799 · #99ef57

Split-complementary

Open in tool →

#ef6157 · #e5ef57

#ef57e5 · #efad57 · #57ef61

Contrast

#5799ef as textRatioAAAA largeAAAFix
Aaon white
2.91:1failfailfail
  • AA: use #1671e9 as the text (4.59:1)
  • AAA: use #1056b1 as the text (7.03:1)
  • AA: or shift the background to #303030 (4.53:1)
  • AAA: or shift the background to #030303 (7.08:1)
Aaon black
7.21:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5799ef 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

#5799ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5799ef
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 #5799ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5799ef-9ca9c4-df5a4e-1f1f2d-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