Color

#20405a

#20405a
hex#20405a
rgbrgb(32, 64, 90)
hslhsl(207, 48%, 24%)
oklchoklch(0.36 0.059 245)
Closest name: Capital Blue (#1a4157)Relative luminance 0.0471

Colors that go with #20405a

Dark Olive Green, Teal and Sienna 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 →

#5b3a20

#205b58 · #20235b

#5b2040 · #405b20

Split-complementary

Open in tool →

#5b2023 · #5b5820

#58205b · #5b3a20 · #235b20

Contrast

#20405a as textRatioAAAA largeAAAFix
Aaon white
10.81:1passpasspassPasses AAA — no fix needed.
Aaon black
1.94:1failfailfail
  • AA: use #3d7bae as the text (4.64:1)
  • AAA: use #649bc9 as the text (7.07:1)
  • AA: or shift the background to #a8a8a8 (4.55:1)
  • AAA: or shift the background to #d1d1d1 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #20405a as the background.

Brands using this color

Fonts for this mood

#20405a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #20405a
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 #20405a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/20405a-9cadc4-df4e53-1f212d-e9f1f1?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