Color

#5ac31d

#5ac31d
hex#5ac31d
rgbrgb(90, 195, 29)
hslhsl(98, 74%, 44%)
oklchoklch(0.726 0.213 137.5)
Closest name: Frog (#58bc08)Relative luminance 0.4129

Colors that go with #5ac31d

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 →

#861dc3

#adc31d · #1dc333

#1d5ac3 · #c31d5a

Split-complementary

Open in tool →

#331dc3 · #c31dad

#1dadc3 · #861dc3 · #c3331d

Contrast

#5ac31d as textRatioAAAA largeAAAFix
Aaon white
2.27:1failfailfail
  • AA: use #3d8514 as the text (4.6:1)
  • AAA: use #2d620f as the text (7.33:1)
  • AA: or shift the background to #404040 (4.57:1)
  • AAA: or shift the background to #212121 (7.1:1)
Aaon black
9.26:1passpasspassPasses 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 #5ac31d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #5ac31d
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 #5ac31d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5ac31d-a9bea2-644edf-1f2d20-f0f1e9?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