Color

#1f355c

#1f355c
hex#1f355c
rgbrgb(31, 53, 92)
hslhsl(218, 50%, 24%)
oklchoklch(0.332 0.075 261.1)
Closest name: Deep Sea Base (#2c2c57)Relative luminance 0.0361

Tints & shades

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

Harmonies

Complementary

Open in tool →

#5c451f

#1f545c · #271f5c

#5c1f35 · #355c1f

Split-complementary

Open in tool →

#5c271f · #545c1f

#5c1f54 · #5c451f · #1f5c27

Contrast

#1f355c as textRatioAAAA largeAAAFix
Aaon white
12.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.72:1failfailfail
  • AA: use #4774c2 as the text (4.55:1)
  • AAA: use #7597d1 as the text (7.1:1)
  • AA: or shift the background to #9e9e9e (4.55:1)
  • AAA: or shift the background to #c7c7c7 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f355c 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

#1f355c reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f355c
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 #1f355c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f355c-9ca6c4-df644e-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