Color

#bde421

#bde421
hex#bde421
rgbrgb(189, 228, 33)
hslhsl(72, 78%, 51%)
oklchoklch(0.861 0.201 121.6)
Closest name: Inchworm (#b2ec5d)Relative luminance 0.6642

Colors that go with #bde421

Blue, Crimson and Denim 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 →

#4821e4

#e4a921 · #5be421

#21bde4 · #e421bd

Split-complementary

Open in tool →

#215be4 · #a921e4

#21e4a9 · #4821e4 · #e4215b

Contrast

#bde421 as textRatioAAAA largeAAAFix
Aaon white
1.47:1failfailfail
  • AA: use #697f10 as the text (4.52:1)
  • AAA: use #4f5f0c as the text (7.06:1)
  • AA: or shift the background to #5c5c5c (4.55:1)
  • AAA: or shift the background to #404040 (7.05:1)
Aaon black
14.28:1passpasspassPasses 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 #bde421 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 #bde421
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 #bde421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/bde421-b5bea2-4e77df-242d1f-f1efe9?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