Color

#c5f019

#c5f019
hex#c5f019
rgbrgb(197, 240, 25)
hslhsl(72, 88%, 52%)
oklchoklch(0.893 0.212 122)
Closest name: Chartreuse (#c1f80a)Relative luminance 0.7426

Colors that go with #c5f019

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 →

#4419f0

#f0b019 · #5af019

#19c5f0 · #f019c5

Split-complementary

Open in tool →

#195af0 · #b019f0

#19f0b0 · #4419f0 · #f0195a

Contrast

#c5f019 as textRatioAAAA largeAAAFix
Aaon white
1.32:1failfailfail
  • AA: use #657d08 as the text (4.68:1)
  • AAA: use #4e6006 as the text (7:1)
  • AA: or shift the background to #636363 (4.54:1)
  • AAA: or shift the background to #474747 (7.01:1)
Aaon black
15.85:1passpasspassPasses 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 #c5f019 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 #c5f019
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 #c5f019 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c5f019-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