Color

#123463

#123463
hex#123463
rgbrgb(18, 52, 99)
hslhsl(215, 69%, 23%)
oklchoklch(0.329 0.092 257.4)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0349

Colors that go with #123463

Crimson, Teal and Sienna 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 →

#634112

#125c63 · #191263

#631234 · #346312

Split-complementary

Open in tool →

#631912 · #5c6312

#63125c · #634112 · #126319

Contrast

#123463 as textRatioAAAA largeAAAFix
Aaon white
12.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.7:1failfailfail
  • AA: use #2c74d8 as the text (4.6:1)
  • AAA: use #6499e3 as the text (7.21:1)
  • AA: or shift the background to #9c9c9c (4.51:1)
  • AAA: or shift the background to #c4c4c4 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #123463 as the background.

Brands using this color

Fonts for this mood

#123463 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #123463
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 #123463 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/123463-9ca8c4-df5d4e-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