Color

#a5d515

#a5d515
hex#a5d515
rgbrgb(165, 213, 21)
hslhsl(75, 82%, 46%)
oklchoklch(0.81 0.199 124.6)
Closest name: yellowgreen (#9acd32)Relative luminance 0.5564

Colors that go with #a5d515

Taupe, Plum and 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 →

#4515d5

#d5a515 · #45d515

#15a5d5 · #d515a5

Split-complementary

Open in tool →

#1545d5 · #a515d5

#15d5a5 · #4515d5 · #d51545

Contrast

#a5d515 as textRatioAAAA largeAAAFix
Aaon white
1.73:1failfailfail
  • AA: use #617d0c as the text (4.72:1)
  • AAA: use #485d09 as the text (7.38:1)
  • AA: or shift the background to #525252 (4.51:1)
  • AAA: or shift the background to #333333 (7.3:1)
Aaon black
12.13:1passpasspassPasses 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 #a5d515 as the background.

Brands using this color

mcpConnect your agent — build around #a5d515
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 #a5d515 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a5d515-b4bea2-4e70df-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