Color

#403a4a

#403a4a
hex#403a4a
rgbrgb(64, 58, 74)
hslhsl(263, 12%, 26%)
oklchoklch(0.361 0.028 302.1)
Closest name: Call It a Night (#42364c)Relative luminance 0.0461

Tints & shades

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

Harmonies

Complementary

Open in tool →

#444a3a

#3a3c4a · #483a4a

#4a403a · #3a4a40

Split-complementary

Open in tool →

#4a483a · #3c4a3a

#4a3a3c · #444a3a · #3a4a48

Contrast

#403a4a as textRatioAAAA largeAAAFix
Aaon white
10.93:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #7c708f as the text (4.57:1)
  • AAA: use #9b92aa as the text (7.09:1)
  • AA: or shift the background to #a8a8a8 (4.59:1)
  • AAA: or shift the background to #cfcfcf (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #403a4a 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

#403a4a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #403a4a
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 #403a4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/403a4a-b09cc4-dfd04e-2b1f2d-e9eaf1?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