Color

#173a44

#173a44
hex#173a44
rgbrgb(23, 58, 68)
hslhsl(193, 49%, 18%)
oklchoklch(0.327 0.044 219.3)
Closest name: Royal Neptune (#1c3b42)Relative luminance 0.0363

Colors that go with #173a44

Crimson, Sienna 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 →

#442117

#174438 · #172444

#44173b · #3b4417

Split-complementary

Open in tool →

#441724 · #443817

#381744 · #442117 · #244417

Contrast

#173a44 as textRatioAAAA largeAAAFix
Aaon white
12.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #337f94 as the text (4.6:1)
  • AAA: use #41a3be as the text (7.21:1)
  • AA: or shift the background to #9e9e9e (4.54:1)
  • AAA: or shift the background to #c7c7c7 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #173a44 as the background.

Brands using this color

Fonts for this mood

#173a44 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173a44
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 #173a44 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173a44-a2b5be-df4e75-1f242d-e9f1ef?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