Color

#151a74

#151a74
hex#151a74
rgbrgb(21, 26, 116)
hslhsl(237, 69%, 27%)
oklchoklch(0.292 0.149 270.4)
Closest name: midnightblue (#191970)Relative luminance 0.0216

Tints & shades

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

Harmonies

Complementary

Open in tool →

#747015

#154a74 · #401574

#74151a · #1a7415

Split-complementary

Open in tool →

#744015 · #4a7415

#74154a · #747015 · #157440

Contrast

#151a74 as textRatioAAAA largeAAAFix
Aaon white
14.67:1passpasspassPasses AAA — no fix needed.
Aaon black
1.43:1failfailfail
  • AA: use #646ae3 as the text (4.71:1)
  • AAA: use #8b8fea as the text (7.21:1)
  • AA: or shift the background to #8f8f8f (4.54:1)
  • AAA: or shift the background to #b5b5b5 (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151a74 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

#151a74 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151a74
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 #151a74 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151a74-9f9cc4-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