Color

#151f56

#151f56
hex#151f56
rgbrgb(21, 31, 86)
hslhsl(231, 61%, 21%)
oklchoklch(0.269 0.1 270.4)
Closest name: Dark Soul (#112255)Relative luminance 0.0181

Tints & shades

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

Harmonies

Complementary

Open in tool →

#564c15

#153f56 · #2c1556

#56151f · #1f5615

Split-complementary

Open in tool →

#562c15 · #3f5615

#56153f · #564c15 · #15562c

Contrast

#151f56 as textRatioAAAA largeAAAFix
Aaon white
15.42:1passpasspassPasses AAA — no fix needed.
Aaon black
1.36:1failfailfail
  • AA: use #5b6dd7 as the text (4.61:1)
  • AAA: use #8492e1 as the text (7.18:1)
  • AA: or shift the background to #8c8c8c (4.58:1)
  • AAA: or shift the background to #b0b0b0 (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 #151f56 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

#151f56 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151f56
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 #151f56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151f56-9c9ec4-df834e-231f2d-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