Color

#5790db

#5790db
hex#5790db
rgbrgb(87, 144, 219)
hslhsl(214, 65%, 60%)
oklchoklch(0.648 0.128 255.9)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2709

Colors that go with #5790db

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 →

#dba257

#57d2db · #6057db

#db5790 · #90db57

Split-complementary

Open in tool →

#db6057 · #d2db57

#db57d2 · #dba257 · #57db60

Contrast

#5790db as textRatioAAAA largeAAAFix
Aaon white
3.27:1failpassfail
  • AA: use #2d74d2 as the text (4.63:1)
  • AAA: use #21569c as the text (7.3:1)
  • AA: or shift the background to #262626 (4.62:1)
Aaon black
6.42:1passpassfail
  • AAA: use #6398de as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5790db as the background.

Brands using this color

Fonts for this mood

#5790db reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5790db
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 #5790db and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5790db-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