Color

#258ebb

#258ebb
hex#258ebb
rgbrgb(37, 142, 187)
hslhsl(198, 67%, 44%)
oklchoklch(0.61 0.113 232.1)
Closest name: steelblue (#4682b4)Relative luminance 0.2333

Colors that go with #258ebb

Charcoal, Crimson and Amber 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 →

#bb5225

#25bb9d · #2543bb

#bb258e · #8ebb25

Split-complementary

Open in tool →

#bb2543 · #bb9d25

#9d25bb · #bb5225 · #43bb25

Contrast

#258ebb as textRatioAAAA largeAAAFix
Aaon white
3.71:1failpassfail
  • AA: use #217ea6 as the text (4.57:1)
  • AAA: use #185e7b as the text (7.18:1)
  • AA: or shift the background to #1c1c1c (4.6:1)
Aaon black
5.67:1passpassfail
  • AAA: use #2aa2d5 as the text (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #258ebb 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

#258ebb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #258ebb
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 #258ebb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/258ebb-9cb3c4-df4e69-1f232d-e9f1f0?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