Color

#1f4b7a

#1f4b7a
hex#1f4b7a
rgbrgb(31, 75, 122)
hslhsl(211, 59%, 30%)
oklchoklch(0.407 0.093 252.4)
Closest name: Assassin (#2d4f83)Relative luminance 0.0673

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7a4e1f

#1f787a · #211f7a

#7a1f4b · #4b7a1f

Split-complementary

Open in tool →

#7a211f · #787a1f

#7a1f78 · #7a4e1f · #1f7a21

Contrast

#1f4b7a as textRatioAAAA largeAAAFix
Aaon white
8.95:1passpasspassPasses AAA — no fix needed.
Aaon black
2.35:1failfailfail
  • AA: use #3278c3 as the text (4.61:1)
  • AAA: use #619ad6 as the text (7.1:1)
  • AA: or shift the background to #b8b8b8 (4.51:1)
  • AAA: or shift the background to #e6e6e6 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f4b7a 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

#1f4b7a reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f4b7a
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 #1f4b7a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f4b7a-9cabc4-df534e-1f202d-e9f1f1?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