Color

#12455e

#12455e
hex#12455e
rgbrgb(18, 69, 94)
hslhsl(200, 68%, 22%)
oklchoklch(0.37 0.068 234.6)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0519

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#5e2b12

#125e52 · #121f5e

#5e1245 · #455e12

Split-complementary

Open in tool →

#5e121f · #5e5212

#52125e · #5e2b12 · #1f5e12

Contrast

#12455e as textRatioAAAA largeAAAFix
Aaon white
10.3:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #217dab as the text (4.59:1)
  • AAA: use #31a0d8 as the text (7.15:1)
  • AA: or shift the background to #adadad (4.59:1)
  • AAA: or shift the background to #d6d6d6 (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 #12455e as the background.

Brands using this color

Fonts for this mood

#12455e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12455e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #12455e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12455e-9cb2c4-df4e64-1f232d-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