Color

#40875a

#40875a
hex#40875a
rgbrgb(64, 135, 90)
hslhsl(142, 36%, 39%)
oklchoklch(0.565 0.101 153.8)
Closest name: seagreen (#2e8b57)Relative luminance 0.1916

Colors that go with #40875a

Charcoal, Royal Blue 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 →

#87406d

#498740 · #40877e

#5a4087 · #875a40

Split-complementary

Open in tool →

#7e4087 · #874049

#404987 · #87406d · #877e40

Contrast

#40875a as textRatioAAAA largeAAAFix
Aaon white
4.35:1failpassfail
  • AA: use #3e8458 as the text (4.52:1)
  • AAA: use #2e6141 as the text (7.24:1)
  • AA: or shift the background to #0a0a0a (4.55:1)
Aaon black
4.83:1passpassfail
  • AAA: use #4ea66f as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40875a as the background.

Brands using this color

mcpConnect your agent — build around #40875a
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 #40875a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40875a-a2beaf-c659d4-1f2d2a-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