Color

#307872

#307872
hex#307872
rgbrgb(48, 120, 114)
hslhsl(175, 43%, 33%)
oklchoklch(0.526 0.072 187.7)
Closest name: Green Sleeves (#39766c)Relative luminance 0.1528

Colors that go with #307872

Charcoal, Crimson and Amber 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.

Real palettes that use #307872

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#783036

#30784e · #305a78

#723078 · #787230

Split-complementary

Open in tool →

#78305a · #784e30

#4e3078 · #783036 · #5a7830

Contrast

#307872 as textRatioAAAA largeAAAFix
Aaon white
5.18:1passpassfail
  • AAA: use #27625e as the text (7.01:1)
Aaon black
4.06:1failpassfail
  • AA: use #338079 as the text (4.5:1)
  • AAA: use #41a49c as the text (7.02:1)
  • AA: or shift the background to #f0f0f0 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #307872 as the background.

Brands using this color

mcpConnect your agent — build around #307872
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 #307872 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/307872-a2bdbe-d4599f-1f282d-e9f1ed?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