Color

#1bc551

#1bc551
hex#1bc551
rgbrgb(27, 197, 81)
hslhsl(139, 76%, 44%)
oklchoklch(0.72 0.204 147.6)
Closest name: Alienated (#00cc55)Relative luminance 0.4076

Colors that go with #1bc551

Blue, Charcoal 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 →

#c51b8f

#3ac51b · #1bc5a6

#511bc5 · #c5511b

Split-complementary

Open in tool →

#a61bc5 · #c51b3a

#1b3ac5 · #c51b8f · #c5a61b

Contrast

#1bc551 as textRatioAAAA largeAAAFix
Aaon white
2.29:1failfailfail
  • AA: use #128737 as the text (4.62:1)
  • AAA: use #0e672a as the text (7.02:1)
  • AA: or shift the background to #404040 (4.52:1)
  • AAA: or shift the background to #212121 (7.02:1)
Aaon black
9.15:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1bc551 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #1bc551
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 #1bc551 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1bc551-a2beae-c059d4-1f2d2a-ebf1e9?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