Color

#259cb1

#259cb1
hex#259cb1
rgbrgb(37, 156, 177)
hslhsl(189, 65%, 42%)
oklchoklch(0.639 0.103 212.7)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2734

Colors that go with #259cb1

Charcoal, Orange Red 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.

Real palettes that use #259cb1

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b13a25

#25b180 · #2556b1

#b1259c · #9cb125

Split-complementary

Open in tool →

#b12556 · #b18025

#8025b1 · #b13a25 · #56b125

Contrast

#259cb1 as textRatioAAAA largeAAAFix
Aaon white
3.25:1failpassfail
  • AA: use #1e7e8f as the text (4.73:1)
  • AAA: use #17606d as the text (7.17:1)
  • AA: or shift the background to #262626 (4.66:1)
Aaon black
6.47:1passpassfail
  • AAA: use #27a3b9 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #259cb1 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

#259cb1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #259cb1
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 #259cb1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/259cb1-a2b7be-df4e7e-1f252d-e9f1ee?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