Color

#173f4a

#173f4a
hex#173f4a
rgbrgb(23, 63, 74)
hslhsl(193, 53%, 19%)
oklchoklch(0.344 0.048 218.8)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0423

Colors that go with #173f4a

Crimson, Steel Blue and Teal 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 →

#4a2217

#174a3c · #17254a

#4a173f · #3f4a17

Split-complementary

Open in tool →

#4a1725 · #4a3c17

#3c174a · #4a2217 · #254a17

Contrast

#173f4a as textRatioAAAA largeAAAFix
Aaon white
11.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #2e7e94 as the text (4.53:1)
  • AAA: use #3ba2bf as the text (7.11:1)
  • AA: or shift the background to #a3a3a3 (4.51:1)
  • AAA: or shift the background to #cccccc (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #173f4a 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

#173f4a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173f4a
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 #173f4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173f4a-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