Color

#151e84

#151e84
hex#151e84
rgbrgb(21, 30, 132)
hslhsl(235, 73%, 30%)
oklchoklch(0.317 0.166 268.9)
Closest name: midnightblue (#191970)Relative luminance 0.0275

Tints & shades

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

Harmonies

Complementary

Open in tool →

#847b15

#155684 · #431584

#84151e · #1e8415

Split-complementary

Open in tool →

#844315 · #568415

#841556 · #847b15 · #158443

Contrast

#151e84 as textRatioAAAA largeAAAFix
Aaon white
13.54:1passpasspassPasses AAA — no fix needed.
Aaon black
1.55:1failfailfail
  • AA: use #5c67e6 as the text (4.54:1)
  • AAA: use #8890ec as the text (7.25:1)
  • AA: or shift the background to #969696 (4.58:1)
  • AAA: or shift the background to #bdbdbd (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 #151e84 as the background.

Brands using this color

Fonts for this mood

#151e84 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151e84
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 #151e84 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151e84-9e9cc4-df8d4e-241f2d-e9eef1?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