Color

#171ab5

#171ab5
hex#171ab5
rgbrgb(23, 26, 181)
hslhsl(239, 77%, 40%)
oklchoklch(0.373 0.226 267.6)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0426

Colors that go with #171ab5

Charcoal, Crimson and Steel 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 →

#b5b217

#1769b5 · #6317b5

#b5171a · #1ab517

Split-complementary

Open in tool →

#b56317 · #69b517

#b51769 · #b5b217 · #17b563

Contrast

#171ab5 as textRatioAAAA largeAAAFix
Aaon white
11.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #6668eb as the text (4.74:1)
  • AAA: use #8a8bf0 as the text (7.03:1)
  • AA: or shift the background to #a6a6a6 (4.66:1)
  • AAA: or shift the background to #cccccc (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #171ab5 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

#171ab5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #171ab5
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 #171ab5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/171ab5-a09cc4-df964e-251f2d-e9edf1?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