Color

#12656d

#12656d
hex#12656d
rgbrgb(18, 101, 109)
hslhsl(185, 72%, 25%)
oklchoklch(0.465 0.074 205)
Closest name: Aqua Obscura (#05696b)Relative luminance 0.1054

Colors that go with #12656d

Crimson, Steel Blue and Cadet 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 →

#6e1a12

#126e47 · #12386e

#6e1266 · #666e12

Split-complementary

Open in tool →

#6e1238 · #6e4712

#47126e · #6e1a12 · #386e12

Contrast

#12656d as textRatioAAAA largeAAAFix
Aaon white
6.76:1passpassfail
  • AAA: use #116269 as the text (7.06:1)
Aaon black
3.11:1failpassfail
  • AA: use #17838c as the text (4.66:1)
  • AAA: use #1da7b4 as the text (7.24:1)
  • AA: or shift the background to #d4d4d4 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12656d as the background.

Brands using this color

Fonts for this mood

#12656d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12656d
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 #12656d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12656d-a2b8be-df4e88-1f262d-e9f1ee?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