Color

#357bfd

#357bfd
hex#357bfd
rgbrgb(53, 123, 253)
hslhsl(219, 98%, 60%)
oklchoklch(0.612 0.207 261.4)
Closest name: Azure (#007fff)Relative luminance 0.2201

Colors that go with #357bfd

Copper, Crimson and Medium Sea Green 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 →

#fdb735

#35dffd · #5335fd

#fd357b · #7bfd35

Split-complementary

Open in tool →

#fd5335 · #dffd35

#fd35df · #fdb735 · #35fd53

Contrast

#357bfd as textRatioAAAA largeAAAFix
Aaon white
3.89:1failpassfail
  • AA: use #1c6bfd as the text (4.59:1)
  • AAA: use #024cd4 as the text (7.03:1)
  • AA: or shift the background to #171717 (4.61:1)
Aaon black
5.4:1passpassfail
  • AAA: use #5d95fd as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #357bfd as the background.

Brands using this color

Fonts for this mood

#357bfd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #357bfd
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 #357bfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/357bfd-9ca5c4-df664e-211f2d-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