Color

#123764

#123764
hex#123764
rgbrgb(18, 55, 100)
hslhsl(213, 69%, 23%)
oklchoklch(0.337 0.09 255.3)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0378

Colors that go with #123764

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 →

#633f12

#125f63 · #161263

#631237 · #376312

Split-complementary

Open in tool →

#631612 · #5f6312

#63125f · #633f12 · #126316

Contrast

#123764 as textRatioAAAA largeAAAFix
Aaon white
11.96:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #2774d3 as the text (4.53:1)
  • AAA: use #609ae2 as the text (7.22:1)
  • AA: or shift the background to #a1a1a1 (4.63:1)
  • AAA: or shift the background to #c7c7c7 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #123764 as the background.

Brands using this color

Fonts for this mood

#123764 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #123764
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 #123764 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/123764-9ca9c4-df584e-1f202d-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