Color

#12407d

#12407d
hex#12407d
rgbrgb(18, 64, 125)
hslhsl(214, 75%, 28%)
oklchoklch(0.378 0.115 257.2)
Closest name: Aegean Blue (#1b416f)Relative luminance 0.0528

Colors that go with #12407d

Crimson, Steel Blue and Blue 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 →

#7d4f12

#12767d · #19127d

#7d1240 · #407d12

Split-complementary

Open in tool →

#7d1912 · #767d12

#7d1276 · #7d4f12 · #127d19

Contrast

#12407d as textRatioAAAA largeAAAFix
Aaon white
10.22:1passpasspassPasses AAA — no fix needed.
Aaon black
2.06:1failfailfail
  • AA: use #2073df as the text (4.58:1)
  • AAA: use #5a97e7 as the text (7.02:1)
  • AA: or shift the background to #adadad (4.55:1)
  • AAA: or shift the background to #d6d6d6 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12407d 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

#12407d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12407d
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 #12407d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12407d-9ca9c4-df5a4e-1f1f2d-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