Color

#40334d

#40334d
hex#40334d
rgbrgb(64, 51, 77)
hslhsl(270, 20%, 25%)
oklchoklch(0.346 0.047 306.9)
Closest name: Call It a Night (#42364c)Relative luminance 0.0399

Tints & shades

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

Harmonies

Complementary

Open in tool →

#404d33

#33334d · #4d334d

#4d4033 · #334d40

Split-complementary

Open in tool →

#4d4d33 · #334d33

#4d3333 · #404d33 · #334d4d

Contrast

#40334d as textRatioAAAA largeAAAFix
Aaon white
11.68:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #856c9d as the text (4.63:1)
  • AAA: use #a18eb4 as the text (7.04:1)
  • AA: or shift the background to #a1a1a1 (4.52:1)
  • AAA: or shift the background to #c9c9c9 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40334d 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

#40334d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #40334d
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 #40334d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40334d-b59cc4-c9cb62-2c1f2d-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