Color

#12453f

#12453f
hex#12453f
rgbrgb(18, 69, 63)
hslhsl(173, 59%, 17%)
oklchoklch(0.355 0.054 184)
Closest name: Tropical Forest (#024a43)Relative luminance 0.0474

Colors that go with #12453f

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 →

#451218

#124525 · #123145

#3f1245 · #453f12

Split-complementary

Open in tool →

#451231 · #452512

#251245 · #451218 · #314512

Contrast

#12453f as textRatioAAAA largeAAAFix
Aaon white
10.78:1passpasspassPasses AAA — no fix needed.
Aaon black
1.95:1failfailfail
  • AA: use #218277 as the text (4.52:1)
  • AAA: use #2ba698 as the text (7.01:1)
  • AA: or shift the background to #a8a8a8 (4.53:1)
  • AAA: or shift the background to #d1d1d1 (7.06:1)

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

Brands using this color

Fonts for this mood

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

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

tool url/palettes/new/12453f-a2bebe-d459a3-1f292d-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