Color

#1f1f3d

#1f1f3d
hex#1f1f3d
rgbrgb(31, 31, 61)
hslhsl(240, 33%, 18%)
oklchoklch(0.256 0.056 281.7)
Closest name: Black Market (#222244)Relative luminance 0.0161

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3d3d1f

#1f2e3d · #2e1f3d

#3d1f1f · #1f3d1f

Split-complementary

Open in tool →

#3d2e1f · #2e3d1f

#3d1f2e · #3d3d1f · #1f3d2e

Contrast

#1f1f3d as textRatioAAAA largeAAAFix
Aaon white
15.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #6d6db6 as the text (4.51:1)
  • AAA: use #9292c8 as the text (7.17:1)
  • AA: or shift the background to #8a8a8a (4.6:1)
  • AAA: or shift the background to #adadad (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f1f3d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#1f1f3d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f1f3d
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 #1f1f3d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f1f3d-a19cc4-df994e-251f2d-e9edf1?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