Color

#03453f

#03453f
hex#03453f
rgbrgb(3, 69, 63)
hslhsl(175, 92%, 14%)
oklchoklch(0.352 0.061 184.9)
Closest name: Botanical Night (#12403c)Relative luminance 0.0463

Colors that go with #03453f

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 →

#450308

#03451e · #032945

#3f0345 · #453f03

Split-complementary

Open in tool →

#450329 · #451e03

#1e0345 · #450308 · #294503

Contrast

#03453f as textRatioAAAA largeAAAFix
Aaon white
10.9:1passpasspassPasses AAA — no fix needed.
Aaon black
1.93:1failfailfail
  • AA: use #06847a as the text (4.59:1)
  • AAA: use #07ab9e as the text (7.33:1)
  • AA: or shift the background to #a8a8a8 (4.58:1)
  • AAA: or shift the background to #d1d1d1 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03453f as the background.

Brands using this color

Fonts for this mood

#03453f reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03453f
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 #03453f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03453f-a2bdbe-d4599f-1f282d-e9f1ed?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