Color

#20403b

#20403b
hex#20403b
rgbrgb(32, 64, 59)
hslhsl(171, 33%, 19%)
oklchoklch(0.345 0.039 182.7)
Closest name: Botanical Night (#12403c)Relative luminance 0.0429

Colors that go with #20403b

Sea Green, Teal and Indian Red 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.

Real palettes that use #20403b

Tints & shades

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

Harmonies

Complementary

Open in tool →

#402025

#20402c · #203540

#3c2040 · #403c20

Split-complementary

Open in tool →

#402035 · #402c20

#2c2040 · #402025 · #354020

Contrast

#20403b as textRatioAAAA largeAAAFix
Aaon white
11.3:1passpasspassPasses AAA — no fix needed.
Aaon black
1.86:1failfailfail
  • AA: use #418177 as the text (4.63:1)
  • AAA: use #52a397 as the text (7.04:1)
  • AA: or shift the background to #a6a6a6 (4.64:1)
  • AAA: or shift the background to #cccccc (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #20403b as the background.

Brands using this color

Fonts for this mood

#20403b reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #20403b
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 #20403b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/20403b-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