Color

#420372

#420372
hex#420372
rgbrgb(66, 3, 114)
hslhsl(274, 95%, 23%)
oklchoklch(0.312 0.161 302)
Closest name: indigo (#4b0082)Relative luminance 0.0244

Colors that go with #420372

Charcoal, Crimson and Denim 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 →

#337203

#0a0372 · #72036b

#724203 · #037242

Split-complementary

Open in tool →

#6b7203 · #03720a

#720a03 · #337203 · #036b72

Contrast

#420372 as textRatioAAAA largeAAAFix
Aaon white
14.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.49:1failfailfail
  • AA: use #a638fa as the text (4.57:1)
  • AAA: use #c174fb as the text (7.16:1)
  • AA: or shift the background to #949494 (4.65:1)
  • AAA: or shift the background to #b8b8b8 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #420372 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

#420372 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #420372
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 #420372 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/420372-b79cc4-c2cb62-2d1f2d-eae9f1?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