Color

#5dc421

#5dc421
hex#5dc421
rgbrgb(93, 196, 33)
hslhsl(98, 71%, 45%)
oklchoklch(0.73 0.211 137.3)
Closest name: Frog (#58bc08)Relative luminance 0.4192

Colors that go with #5dc421

Charcoal, Royal Blue and Taupe 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 →

#8821c4

#aec421 · #21c437

#215dc4 · #c4215d

Split-complementary

Open in tool →

#3721c4 · #c421ae

#21aec4 · #8821c4 · #c43721

Contrast

#5dc421 as textRatioAAAA largeAAAFix
Aaon white
2.24:1failfailfail
  • AA: use #3e8316 as the text (4.71:1)
  • AAA: use #306411 as the text (7.1:1)
  • AA: or shift the background to #404040 (4.63:1)
  • AAA: or shift the background to #212121 (7.19:1)
Aaon black
9.38:1passpasspassPasses 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 #5dc421 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 #5dc421
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 #5dc421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5dc421-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