Color

#1d8b58

#1d8b58
hex#1d8b58
rgbrgb(29, 139, 88)
hslhsl(152, 65%, 33%)
oklchoklch(0.565 0.124 157.4)
Closest name: seagreen (#2e8b57)Relative luminance 0.1943

Colors that go with #1d8b58

Charcoal, Crimson and Royal 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 →

#8b1d51

#1d8b21 · #1d878b

#581d8b · #8b581d

Split-complementary

Open in tool →

#8b1d87 · #8b211d

#211d8b · #8b1d51 · #878b1d

Contrast

#1d8b58 as textRatioAAAA largeAAAFix
Aaon white
4.3:1failpassfail
  • AA: use #1d8755 as the text (4.52:1)
  • AAA: use #156540 as the text (7.08:1)
  • AA: or shift the background to #0d0d0d (4.52:1)
Aaon black
4.89:1passpassfail
  • AAA: use #25ad6d as the text (7.28:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1d8b58 as the background.

Brands using this color

mcpConnect your agent — build around #1d8b58
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 #1d8b58 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d8b58-a2beb4-d459ce-1f2d2d-e9f1ea?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