Color

#213945

#213945
hex#213945
rgbrgb(33, 57, 69)
hslhsl(200, 35%, 20%)
oklchoklch(0.33 0.037 231.1)
Closest name: Astral Nomad (#203943)Relative luminance 0.0368

Colors that go with #213945

Dark Olive Green, Royal Blue 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 →

#452d21

#21453f · #212745

#452139 · #394521

Split-complementary

Open in tool →

#452127 · #453f21

#3f2145 · #452d21 · #274521

Contrast

#213945 as textRatioAAAA largeAAAFix
Aaon white
12.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.74:1failfailfail
  • AA: use #497d97 as the text (4.66:1)
  • AAA: use #689cb6 as the text (7.02:1)
  • AA: or shift the background to #9e9e9e (4.52:1)
  • AAA: or shift the background to #c7c7c7 (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #213945 as the background.

Brands using this color

Fonts for this mood

#213945 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #213945
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 #213945 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/213945-9cb2c4-df4e64-1f232d-e9f1f0?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