Color

#01173c

#01173c
hex#01173c
rgbrgb(1, 23, 60)
hslhsl(218, 97%, 12%)
oklchoklch(0.214 0.078 258.6)
Closest name: Infinite Night (#071037)Relative luminance 0.0095

Colors that go with #01173c

Blue Violet, Charcoal and Crimson 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 →

#3c2701

#01343c · #09013c

#3c0117 · #173c01

Split-complementary

Open in tool →

#3c0901 · #343c01

#3c0134 · #3c2701 · #013c09

Contrast

#01173c as textRatioAAAA largeAAAFix
Aaon white
17.66:1passpasspassPasses AAA — no fix needed.
Aaon black
1.19:1failfailfail
  • AA: use #186bfb as the text (4.53:1)
  • AAA: use #5995fc as the text (7.13:1)
  • AA: or shift the background to #828282 (4.6:1)
  • AAA: or shift the background to #a3a3a3 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #01173c as the background.

Brands using this color

Fonts for this mood

#01173c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #01173c
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 #01173c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/01173c-9ca6c4-df644e-201f2d-e9f0f1?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