Color

#3b875e

#3b875e
hex#3b875e
rgbrgb(59, 135, 94)
hslhsl(148, 39%, 38%)
oklchoklch(0.564 0.099 157.3)
Closest name: seagreen (#2e8b57)Relative luminance 0.1907

Colors that go with #3b875e

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 →

#873b63

#3e873b · #3b8784

#5e3b87 · #875e3b

Split-complementary

Open in tool →

#843b87 · #873b3e

#3b3e87 · #873b63 · #87843b

Contrast

#3b875e as textRatioAAAA largeAAAFix
Aaon white
4.36:1failpassfail
  • AA: use #3a835c as the text (4.58:1)
  • AAA: use #2c6346 as the text (7.05:1)
  • AA: or shift the background to #0a0a0a (4.54:1)
Aaon black
4.81:1passpassfail
  • AAA: use #49a775 as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b875e as the background.

Brands using this color

mcpConnect your agent — build around #3b875e
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 #3b875e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b875e-a2beb2-d259d4-1f2d2c-eaf1e9?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