Color

#151a6f

#151a6f
hex#151a6f
rgbrgb(21, 26, 111)
hslhsl(237, 68%, 26%)
oklchoklch(0.286 0.142 270.7)
Closest name: midnightblue (#191970)Relative luminance 0.0205

Tints & shades

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

Harmonies

Complementary

Open in tool →

#6f6b15

#15476f · #3e156f

#6f151a · #1a6f15

Split-complementary

Open in tool →

#6f3e15 · #476f15

#6f1547 · #6f6b15 · #156f3e

Contrast

#151a6f as textRatioAAAA largeAAAFix
Aaon white
14.9:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #6067e1 as the text (4.52:1)
  • AAA: use #8b90e9 as the text (7.26:1)
  • AA: or shift the background to #8f8f8f (4.61:1)
  • AAA: or shift the background to #b3b3b3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151a6f 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

#151a6f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151a6f
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 #151a6f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151a6f-9f9cc4-df924e-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