Color

#42374e

#42374e
hex#42374e
rgbrgb(66, 55, 78)
hslhsl(269, 17%, 26%)
oklchoklch(0.358 0.041 306.2)
Closest name: Call It a Night (#42364c)Relative luminance 0.0444

Tints & shades

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

Harmonies

Complementary

Open in tool →

#434e37

#37374e · #4d374e

#4e4237 · #374e42

Split-complementary

Open in tool →

#4e4d37 · #374e37

#4e3737 · #434e37 · #374e4d

Contrast

#42374e as textRatioAAAA largeAAAFix
Aaon white
11.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.89:1failfailfail
  • AA: use #816d97 as the text (4.57:1)
  • AAA: use #a091b1 as the text (7.18:1)
  • AA: or shift the background to #a6a6a6 (4.57:1)
  • AAA: or shift the background to #cfcfcf (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 #42374e 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

#42374e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #42374e
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 #42374e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/42374e-b49cc4-cbcb62-2c1f2d-e9e9f1?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