Color

#15f451

#15f451
hex#15f451
rgbrgb(21, 244, 81)
hslhsl(136, 91%, 52%)
oklchoklch(0.842 0.256 145.7)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6545

Colors that go with #15f451

Violet, Deep Sky Blue and Hot Pink 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 →

#f415b9

#49f415 · #15f4c0

#5115f4 · #f45115

Split-complementary

Open in tool →

#c015f4 · #f41549

#1549f4 · #f415b9 · #f4c015

Contrast

#15f451 as textRatioAAAA largeAAAFix
Aaon white
1.49:1failfailfail
  • AA: use #068829 as the text (4.6:1)
  • AAA: use #05661f as the text (7.18:1)
  • AA: or shift the background to #595959 (4.7:1)
  • AAA: or shift the background to #3d3d3d (7.29:1)
Aaon black
14.09:1passpasspassPasses 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 #15f451 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 #15f451
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 #15f451 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/15f451-a2bead-b959d4-1f2d29-ebf1e9?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