Color

#12384a

#12384a
hex#12384a
rgbrgb(18, 56, 74)
hslhsl(199, 61%, 18%)
oklchoklch(0.323 0.053 232.4)
Closest name: Into the Night (#1e3642)Relative luminance 0.0345

Colors that go with #12384a

Crimson, Royal Blue 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 →

#4a2412

#124a40 · #121c4a

#4a1238 · #384a12

Split-complementary

Open in tool →

#4a121c · #4a4012

#40124a · #4a2412 · #1c4a12

Contrast

#12384a as textRatioAAAA largeAAAFix
Aaon white
12.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.69:1failfailfail
  • AA: use #287da4 as the text (4.56:1)
  • AAA: use #3aa0cf as the text (7.11:1)
  • AA: or shift the background to #9c9c9c (4.53:1)
  • AAA: or shift the background to #c4c4c4 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12384a as the background.

Brands using this color

Fonts for this mood

#12384a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12384a
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 #12384a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12384a-9cb3c4-df4e66-1f232d-e9f1f0?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