Color

#17257d

#17257d
hex#17257d
rgbrgb(23, 37, 125)
hslhsl(232, 69%, 29%)
oklchoklch(0.322 0.148 268.7)
Closest name: Below the Surface (#0a2f7c)Relative luminance 0.0299

Colors that go with #17257d

Charcoal, Steel Blue and Blue 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 →

#7d6f17

#17587d · #3c177d

#7d1725 · #257d17

Split-complementary

Open in tool →

#7d3c17 · #587d17

#7d1758 · #7d6f17 · #177d3c

Contrast

#17257d as textRatioAAAA largeAAAFix
Aaon white
13.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #5769e0 as the text (4.5:1)
  • AAA: use #8290e8 as the text (7.1:1)
  • AA: or shift the background to #999999 (4.61:1)
  • AAA: or shift the background to #bfbfbf (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #17257d as the background.

Brands using this color

Fonts for this mood

#17257d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #17257d
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 #17257d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/17257d-9c9dc4-df864e-231f2d-e9eef1?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