Color

#215154

#215154
hex#215154
rgbrgb(33, 81, 84)
hslhsl(184, 44%, 23%)
oklchoklch(0.403 0.052 200.9)
Closest name: darkslategray (#2f4f4f)Relative luminance 0.0685

Colors that go with #215154

Teal, Rust and Blue 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 →

#542421

#21543e · #213754

#542151 · #515421

Split-complementary

Open in tool →

#542137 · #543e21

#3e2154 · #542421 · #375421

Contrast

#215154 as textRatioAAAA largeAAAFix
Aaon white
8.86:1passpasspassPasses AAA — no fix needed.
Aaon black
2.37:1failfailfail
  • AA: use #337f84 as the text (4.51:1)
  • AAA: use #43a6ad as the text (7.3:1)
  • AA: or shift the background to #bababa (4.57:1)
  • AAA: or shift the background to #e6e6e6 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #215154 as the background.

Brands using this color

Fonts for this mood

#215154 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #215154
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 #215154 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/215154-a2b9be-df4e8a-1f262d-e9f1ee?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