Color

#257cda

#257cda
hex#257cda
rgbrgb(37, 124, 218)
hslhsl(211, 71%, 50%)
oklchoklch(0.586 0.164 254)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.1987

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#da8325

#25d7da · #2825da

#da257c · #7cda25

Split-complementary

Open in tool →

#da2825 · #d7da25

#da25d7 · #da8325 · #25da28

Contrast

#257cda as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #2375cd as the text (4.67:1)
  • AAA: use #1b5a9d as the text (7.01:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.97:1passpassfail
  • AAA: use #5599e2 as the text (7.04:1)

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

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

mcpConnect your agent — build around #257cda
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #257cda and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/257cda-9cabc4-df534e-1f202d-e9f1f1?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