Color

#d5fd12

#d5fd12
hex#d5fd12
rgbrgb(213, 253, 18)
hslhsl(70, 98%, 53%)
oklchoklch(0.933 0.221 120.7)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.8444

Colors that go with #d5fd12

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 →

#3912fd

#fdae12 · #60fd12

#12d5fd · #fd12d5

Split-complementary

Open in tool →

#1260fd · #ae12fd

#12fdae · #3912fd · #fd1260

Contrast

#d5fd12 as textRatioAAAA largeAAAFix
Aaon white
1.17:1failfailfail
  • AA: use #697e01 as the text (4.58:1)
  • AAA: use #4c5b01 as the text (7.49:1)
  • AA: or shift the background to #6b6b6b (4.54:1)
  • AAA: or shift the background to #4d4d4d (7.2:1)
Aaon black
17.89:1passpasspassPasses 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 #d5fd12 as the background.

Brands using this color

Palettes built around it

mcpConnect your agent — build around #d5fd12
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 #d5fd12 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d5fd12-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