Color

#1d3977

#1d3977
hex#1d3977
rgbrgb(29, 57, 119)
hslhsl(221, 61%, 29%)
oklchoklch(0.361 0.112 263.5)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0452

Tints & shades

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

Harmonies

Complementary

Open in tool →

#775a1d

#1d6777 · #2d1d77

#771d39 · #39771d

Split-complementary

Open in tool →

#772d1d · #67771d

#771d67 · #775a1d · #1d772d

Contrast

#1d3977 as textRatioAAAA largeAAAFix
Aaon white
11.03:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #4673d2 as the text (4.64:1)
  • AAA: use #7395dd as the text (7.07:1)
  • AA: or shift the background to #a6a6a6 (4.53:1)
  • AAA: or shift the background to #cfcfcf (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 #1d3977 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

#1d3977 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d3977
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 #1d3977 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d3977-9ca4c4-df6b4e-211f2d-e9eff1?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