Color

#257cef

#257cef
hex#257cef
rgbrgb(37, 124, 239)
hslhsl(214, 86%, 54%)
oklchoklch(0.6 0.191 257.4)
Closest name: Azure (#007fff)Relative luminance 0.2104

Colors that go with #257cef

Charcoal, Crimson and Copper 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 →

#ef9725

#25e1ef · #3225ef

#ef257c · #7cef25

Split-complementary

Open in tool →

#ef3225 · #e1ef25

#ef25e1 · #ef9725 · #25ef32

Contrast

#257cef as textRatioAAAA largeAAAFix
Aaon white
4.03:1failpassfail
  • AA: use #1271ed as the text (4.55:1)
  • AAA: use #0d54af as the text (7.23:1)
  • AA: or shift the background to #141414 (4.57:1)
Aaon black
5.21:1passpassfail
  • AAA: use #5499f2 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #257cef 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

#257cef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #257cef
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 #257cef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/257cef-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