Color

#42648a

#42648a
hex#42648a
rgbrgb(66, 100, 138)
hslhsl(212, 35%, 40%)
oklchoklch(0.494 0.073 252)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1211

Colors that go with #42648a

Charcoal, Sienna and Amber 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 →

#8a6842

#42878a · #45428a

#8a4264 · #648a42

Split-complementary

Open in tool →

#8a4542 · #878a42

#8a4287 · #8a6842 · #428a45

Contrast

#42648a as textRatioAAAA largeAAAFix
Aaon white
6.14:1passpassfail
  • AAA: use #3c5a7c as the text (7.13:1)
Aaon black
3.42:1failpassfail
  • AA: use #5078a5 as the text (4.57:1)
  • AAA: use #7999be as the text (7.11:1)
  • AA: or shift the background to #dedede (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #42648a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#42648a reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42648a
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 #42648a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42648a-9caac4-df564e-1f202d-e9f1f1?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