Color

#42358d

#42358d
hex#42358d
rgbrgb(66, 53, 141)
hslhsl(249, 45%, 38%)
oklchoklch(0.396 0.14 284.8)
Closest name: darkslateblue (#483d8b)Relative luminance 0.0563

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#7f8d35

#35548d · #6e358d

#8d4235 · #358d42

Split-complementary

Open in tool →

#8d6e35 · #548d35

#8d3554 · #7f8d35 · #358d6e

Contrast

#42358d as textRatioAAAA largeAAAFix
Aaon white
9.88:1passpasspassPasses AAA — no fix needed.
Aaon black
2.13:1failfailfail
  • AA: use #7667c5 as the text (4.52:1)
  • AAA: use #978cd4 as the text (7.02:1)
  • AA: or shift the background to #b0b0b0 (4.56:1)
  • AAA: or shift the background to #dbdbdb (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 #42358d 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

#42358d reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42358d
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #42358d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42358d-a79cc4-dfae4e-271f2d-e9ecf1?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