Color

#1b1e7e

#1b1e7e
hex#1b1e7e
rgbrgb(27, 30, 126)
hslhsl(238, 65%, 30%)
oklchoklch(0.313 0.156 271.6)
Closest name: midnightblue (#191970)Relative luminance 0.0267

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7e7b1b

#1b507e · #491b7e

#7e1b1e · #1e7e1b

Split-complementary

Open in tool →

#7e491b · #507e1b

#7e1b50 · #7e7b1b · #1b7e49

Contrast

#1b1e7e as textRatioAAAA largeAAAFix
Aaon white
13.69:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #6367de as the text (4.53:1)
  • AAA: use #8d90e7 as the text (7.28:1)
  • AA: or shift the background to #949494 (4.51:1)
  • AAA: or shift the background to #bababa (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 #1b1e7e as the background.

Brands using this color

Fonts for this mood

#1b1e7e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b1e7e
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 #1b1e7e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b1e7e-9f9cc4-df944e-251f2d-e9edf1?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