Color

#23659f

#23659f
hex#23659f
rgbrgb(35, 101, 159)
hslhsl(208, 64%, 38%)
oklchoklch(0.495 0.114 249)
Closest name: Chill of the Night (#256d8d)Relative luminance 0.1217

Colors that go with #23659f

Charcoal, Crimson and Sienna 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 →

#9f5d23

#239f9b · #23279f

#9f2365 · #659f23

Split-complementary

Open in tool →

#9f2327 · #9f9b23

#9b239f · #9f5d23 · #279f23

Contrast

#23659f as textRatioAAAA largeAAAFix
Aaon white
6.12:1passpassfail
  • AAA: use #1f5a8e as the text (7.21:1)
Aaon black
3.43:1failpassfail
  • AA: use #2978bc as the text (4.51:1)
  • AAA: use #549bd9 as the text (7.07:1)
  • AA: or shift the background to #dedede (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #23659f as the background.

Brands using this color

Fonts for this mood

#23659f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #23659f
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 #23659f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/23659f-9cadc4-df4e51-1f212d-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