Color

#151f89

#151f89
hex#151f89
rgbrgb(21, 31, 137)
hslhsl(235, 73%, 31%)
oklchoklch(0.324 0.171 268.6)
Closest name: Deepsea Kraken (#082599)Relative luminance 0.0295

Tints & shades

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

Harmonies

Complementary

Open in tool →

#897f15

#155989 · #451589

#89151f · #1f8915

Split-complementary

Open in tool →

#894515 · #598915

#891559 · #897f15 · #158945

Contrast

#151f89 as textRatioAAAA largeAAAFix
Aaon white
13.21:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #5c67e6 as the text (4.54:1)
  • AAA: use #8890ec as the text (7.25:1)
  • AA: or shift the background to #999999 (4.64:1)
  • AAA: or shift the background to #bdbdbd (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151f89 as the background.

Brands using this color

Fonts for this mood

#151f89 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151f89
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 #151f89 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151f89-9e9cc4-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