Color

#1f577f

#1f577f
hex#1f577f
rgbrgb(31, 87, 127)
hslhsl(205, 61%, 31%)
oklchoklch(0.44 0.088 243.6)
Closest name: Beyond the Sea (#005784)Relative luminance 0.0864

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7f471f

#1f7f77 · #1f277f

#7f1f57 · #577f1f

Split-complementary

Open in tool →

#7f1f27 · #7f771f

#771f7f · #7f471f · #277f1f

Contrast

#1f577f as textRatioAAAA largeAAAFix
Aaon white
7.7:1passpasspassPasses AAA — no fix needed.
Aaon black
2.73:1failfailfail
  • AA: use #2c7cb5 as the text (4.66:1)
  • AAA: use #4e9cd4 as the text (7.03:1)
  • AA: or shift the background to #c7c7c7 (4.55:1)
  • AAA: or shift the background to #f5f5f5 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f577f 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

#1f577f reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f577f
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 #1f577f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f577f-9cafc4-df4e58-1f212d-e9f1f0?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