Color

#28393e

#28393e
hex#28393e
rgbrgb(40, 57, 62)
hslhsl(194, 22%, 20%)
oklchoklch(0.332 0.024 217.9)
Closest name: Astral Nomad (#203943)Relative luminance 0.0373

Colors that go with #28393e

Amber, Blue and Blush Pink 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 →

#3e2d28

#283e38 · #282e3e

#3e2839 · #393e28

Split-complementary

Open in tool →

#3e282e · #3e3828

#38283e · #3e2d28 · #2e3e28

Contrast

#28393e as textRatioAAAA largeAAAFix
Aaon white
12.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #567b86 as the text (4.57:1)
  • AAA: use #769ca7 as the text (7.08:1)
  • AA: or shift the background to #a1a1a1 (4.66:1)
  • AAA: or shift the background to #c7c7c7 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #28393e as the background.

Brands using this color

Fonts for this mood

#28393e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #28393e
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 #28393e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/28393e-9cb6c4-df4e72-1f242d-e9f1ef?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