Color

#11403a

#11403a
hex#11403a
rgbrgb(17, 64, 58)
hslhsl(172, 58%, 16%)
oklchoklch(0.338 0.051 183.2)
Closest name: Botanical Night (#12403c)Relative luminance 0.0409

Colors that go with #11403a

Sea Green, Teal and Amber 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 →

#401117

#114022 · #112f40

#3a1140 · #403a11

Split-complementary

Open in tool →

#40112f · #402211

#221140 · #401117 · #2f4011

Contrast

#11403a as textRatioAAAA largeAAAFix
Aaon white
11.55:1passpasspassPasses AAA — no fix needed.
Aaon black
1.82:1failfailfail
  • AA: use #238578 as the text (4.7:1)
  • AAA: use #2da999 as the text (7.25:1)
  • AA: or shift the background to #a3a3a3 (4.58:1)
  • AAA: or shift the background to #cccccc (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #11403a as the background.

Brands using this color

Fonts for this mood

#11403a reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #11403a
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 #11403a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/11403a-a2bebe-d459a5-1f292d-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