Color

#1d4591

#1d4591
hex#1d4591
rgbrgb(29, 69, 145)
hslhsl(219, 67%, 34%)
oklchoklch(0.408 0.134 261.7)
Closest name: Cascade Twilight (#234893)Relative luminance 0.0656

Tints & shades

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

Harmonies

Complementary

Open in tool →

#91681d

#1d7f91 · #2e1d91

#911d45 · #45911d

Split-complementary

Open in tool →

#912e1d · #7f911d

#911d7f · #91681d · #1d912e

Contrast

#1d4591 as textRatioAAAA largeAAAFix
Aaon white
9.08:1passpasspassPasses AAA — no fix needed.
Aaon black
2.31:1failfailfail
  • AA: use #3b72d8 as the text (4.58:1)
  • AAA: use #6e97e2 as the text (7.19:1)
  • AA: or shift the background to #b8b8b8 (4.58:1)
  • AAA: or shift the background to #e3e3e3 (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 #1d4591 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

#1d4591 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d4591
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 #1d4591 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d4591-9ca5c4-df664e-211f2d-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