Color

#423947

#423947
hex#423947
rgbrgb(66, 57, 71)
hslhsl(279, 11%, 25%)
oklchoklch(0.359 0.027 313.5)
Closest name: Call It a Night (#42364c)Relative luminance 0.0454

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3e4739

#3b3947 · #473945

#474239 · #394742

Split-complementary

Open in tool →

#454739 · #39473b

#473b39 · #3e4739 · #394547

Contrast

#423947 as textRatioAAAA largeAAAFix
Aaon white
11.01:1passpasspassPasses AAA — no fix needed.
Aaon black
1.91:1failfailfail
  • AA: use #816f8b as the text (4.58:1)
  • AAA: use #9f91a6 as the text (7.07:1)
  • AA: or shift the background to #a6a6a6 (4.52:1)
  • AAA: or shift the background to #cfcfcf (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #423947 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

#423947 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #423947
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 #423947 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/423947-b99fc1-b9cb62-2d1f2c-ebe9f1?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