Color

#1f3047

#1f3047
hex#1f3047
rgbrgb(31, 48, 71)
hslhsl(215, 39%, 20%)
oklchoklch(0.306 0.048 256.2)
Closest name: Blue Whale (#1e3442)Relative luminance 0.0286

Tints & shades

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

Harmonies

Complementary

Open in tool →

#47361f

#1f4447 · #221f47

#471f30 · #30471f

Split-complementary

Open in tool →

#47221f · #44471f

#471f44 · #47361f · #1f4722

Contrast

#1f3047 as textRatioAAAA largeAAAFix
Aaon white
13.36:1passpasspassPasses AAA — no fix needed.
Aaon black
1.57:1failfailfail
  • AA: use #4e77b1 as the text (4.6:1)
  • AAA: use #7898c4 as the text (7.09:1)
  • AA: or shift the background to #969696 (4.52:1)
  • AAA: or shift the background to #bdbdbd (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f3047 as the background.

Brands using this color

Fonts for this mood

#1f3047 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f3047
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 #1f3047 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f3047-9ca8c4-df5d4e-201f2d-e9f0f1?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