Color

#28223f

#28223f
hex#28223f
rgbrgb(40, 34, 63)
hslhsl(252, 30%, 19%)
oklchoklch(0.274 0.053 292)
Closest name: Midnight Velvet (#2a2243)Relative luminance 0.0195

Colors that go with #28223f

Charcoal, Dark Olive Green and Sea Green 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 →

#393f22

#222b3f · #36223f

#3f2822 · #223f28

Split-complementary

Open in tool →

#3f3622 · #2b3f22

#3f222b · #393f22 · #223f36

Contrast

#28223f as textRatioAAAA largeAAAFix
Aaon white
15.1:1passpasspassPasses AAA — no fix needed.
Aaon black
1.39:1failfailfail
  • AA: use #7b6db0 as the text (4.66:1)
  • AAA: use #998ec2 as the text (7:1)
  • AA: or shift the background to #8f8f8f (4.67:1)
  • AAA: or shift the background to #b3b3b3 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28223f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#28223f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28223f
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 #28223f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28223f-a99cc4-dfb64e-281f2d-e9ecf1?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