Color

#d3f529

#d3f529
hex#d3f529
rgbrgb(211, 245, 41)
hslhsl(70, 91%, 56%)
oklchoklch(0.914 0.208 119.6)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7931

Colors that go with #d3f529

Blue, Crimson and Red 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 →

#4b29f5

#f5b129 · #6df529

#29d3f5 · #f529d3

Split-complementary

Open in tool →

#296df5 · #b129f5

#29f5b1 · #4b29f5 · #f5296d

Contrast

#d3f529 as textRatioAAAA largeAAAFix
Aaon white
1.25:1failfailfail
  • AA: use #6b7f06 as the text (4.5:1)
  • AAA: use #4e5d04 as the text (7.26:1)
  • AA: or shift the background to #666666 (4.61:1)
  • AAA: or shift the background to #4a4a4a (7.12:1)
Aaon black
16.86:1passpasspassPasses 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 #d3f529 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 #d3f529
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 #d3f529 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d3f529-b6bea2-4e7cdf-252d1f-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