Color

#12453d

#12453d
hex#12453d
rgbrgb(18, 69, 61)
hslhsl(171, 59%, 17%)
oklchoklch(0.355 0.055 180.5)
Closest name: Tropical Forest (#024a43)Relative luminance 0.0472

Colors that go with #12453d

Sea Green, Teal 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 →

#451219

#124524 · #123345

#3d1245 · #453d12

Split-complementary

Open in tool →

#451233 · #452412

#241245 · #451219 · #334512

Contrast

#12453d as textRatioAAAA largeAAAFix
Aaon white
10.8:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #218273 as the text (4.51:1)
  • AAA: use #2caa97 as the text (7.3:1)
  • AA: or shift the background to #a8a8a8 (4.54:1)
  • AAA: or shift the background to #d1d1d1 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #12453d as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#12453d reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #12453d
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 #12453d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/12453d-a2bebd-d459a7-1f292d-e9f1ec?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