Color

#21735c

#21735c
hex#21735c
rgbrgb(33, 115, 92)
hslhsl(163, 55%, 29%)
oklchoklch(0.5 0.086 170.3)
Closest name: Greasy Greens (#117755)Relative luminance 0.1336

Colors that go with #21735c

Charcoal, Crimson and Medium Violet Red 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 →

#732138

#217333 · #216173

#5c2173 · #735c21

Split-complementary

Open in tool →

#732161 · #733321

#332173 · #732138 · #617321

Contrast

#21735c as textRatioAAAA largeAAAFix
Aaon white
5.72:1passpassfail
  • AAA: use #1d634f as the text (7.12:1)
Aaon black
3.67:1failpassfail
  • AA: use #27866b as the text (4.71:1)
  • AAA: use #31aa88 as the text (7.24:1)
  • AA: or shift the background to #e6e6e6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #21735c as the background.

Brands using this color

Fonts for this mood

#21735c reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #21735c
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 #21735c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/21735c-a2beb9-d459b7-1f2b2d-e9f1eb?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