Color

#257cfe

#257cfe
hex#257cfe
rgbrgb(37, 124, 254)
hslhsl(216, 99%, 57%)
oklchoklch(0.611 0.21 259.2)
Closest name: Azure (#007fff)Relative luminance 0.2196

Colors that go with #257cfe

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 →

#fea725

#25e8fe · #3b25fe

#fe257c · #7cfe25

Split-complementary

Open in tool →

#fe3b25 · #e8fe25

#fe25e8 · #fea725 · #25fe3b

Contrast

#257cfe as textRatioAAAA largeAAAFix
Aaon white
3.89:1failpassfail
  • AA: use #0b6cfe as the text (4.57:1)
  • AAA: use #0150c6 as the text (7.08:1)
  • AA: or shift the background to #171717 (4.6:1)
Aaon black
5.39:1passpassfail
  • AAA: use #5297fe 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 #257cfe as the background.

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/257cfe-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