Color

#399405

#399405
hex#399405
rgbrgb(57, 148, 5)
hslhsl(98, 93%, 30%)
oklchoklch(0.588 0.182 138.5)
Closest name: Grass Is Greener (#3f9b0b)Relative luminance 0.2206

Colors that go with #399405

Crimson, Royal Blue and Charcoal 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 →

#5f0594

#819405 · #059418

#053a94 · #94053a

Split-complementary

Open in tool →

#180594 · #940581

#058194 · #5f0594 · #941805

Contrast

#399405 as textRatioAAAA largeAAAFix
Aaon white
3.88:1failpassfail
  • AA: use #348505 as the text (4.66:1)
  • AAA: use #266204 as the text (7.42:1)
  • AA: or shift the background to #171717 (4.62:1)
Aaon black
5.41:1passpassfail
  • AAA: use #43ac06 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #399405 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#399405 reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #399405
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 #399405 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/399405-a9bea2-644edf-1f2d20-f0f1e9?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