Color

#78c91d

#78c91d
hex#78c91d
rgbrgb(120, 201, 29)
hslhsl(88, 75%, 45%)
oklchoklch(0.755 0.205 133.1)
Closest name: Blinking Terminal (#66cc00)Relative luminance 0.4586

Colors that go with #78c91d

Blue, Taupe and Violet 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 →

#6d1dc9

#c9c31d · #22c91d

#1d78c9 · #c91d78

Split-complementary

Open in tool →

#1d22c9 · #c31dc9

#1dc9c3 · #6d1dc9 · #c91d22

Contrast

#78c91d as textRatioAAAA largeAAAFix
Aaon white
2.06:1failfailfail
  • AA: use #4e8112 as the text (4.7:1)
  • AAA: use #3b620e as the text (7.14:1)
  • AA: or shift the background to #474747 (4.5:1)
  • AAA: or shift the background to #292929 (7.05:1)
Aaon black
10.17:1passpasspassPasses 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 #78c91d 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 #78c91d
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 #78c91d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/78c91d-aebea2-4e51df-212d1f-f1f1e9?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