Color

#12434e

#12434e
hex#12434e
rgbrgb(18, 67, 78)
hslhsl(191, 63%, 19%)
oklchoklch(0.356 0.054 215.8)
Closest name: Cold and Dark (#154250)Relative luminance 0.0469

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f1d12

#124f3c · #12254f

#4f1244 · #444f12

Split-complementary

Open in tool →

#4f1225 · #4f3c12

#3c124f · #4f1d12 · #254f12

Contrast

#12434e as textRatioAAAA largeAAAFix
Aaon white
10.83:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #228096 as the text (4.6:1)
  • AAA: use #2ba4bf as the text (7.17:1)
  • AA: or shift the background to #a8a8a8 (4.56:1)
  • AAA: or shift the background to #d1d1d1 (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 #12434e as the background.

Brands using this color

Fonts for this mood

#12434e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12434e
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 #12434e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12434e-a2b6be-df4e7a-1f252d-e9f1ef?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