Color

#3a445a

#3a445a
hex#3a445a
rgbrgb(58, 68, 90)
hslhsl(221, 22%, 29%)
oklchoklch(0.387 0.04 265.6)
Closest name: Bonne Nuit (#3a4866)Relative luminance 0.0577

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5a503a

#3a545a · #403a5a

#5a3a44 · #445a3a

Split-complementary

Open in tool →

#5a403a · #545a3a

#5a3a54 · #5a503a · #3a5a40

Contrast

#3a445a as textRatioAAAA largeAAAFix
Aaon white
9.75:1passpasspassPasses AAA — no fix needed.
Aaon black
2.15:1failfailfail
  • AA: use #63759c as the text (4.56:1)
  • AAA: use #8996b3 as the text (7.08:1)
  • AA: or shift the background to #b3b3b3 (4.65:1)
  • AAA: or shift the background to #dbdbdb (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a445a 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

#3a445a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a445a
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 #3a445a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a445a-9ca4c4-df6b4e-211f2d-e9eff1?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