Color

#151e4c

#151e4c
hex#151e4c
rgbrgb(21, 30, 76)
hslhsl(230, 57%, 19%)
oklchoklch(0.258 0.086 270.9)
Closest name: Dark Soul (#112255)Relative luminance 0.0161

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4c4315

#153a4c · #27154c

#4c151e · #1e4c15

Split-complementary

Open in tool →

#4c2715 · #3a4c15

#4c153a · #4c4315 · #154c27

Contrast

#151e4c as textRatioAAAA largeAAAFix
Aaon white
15.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.32:1failfailfail
  • AA: use #5b6fd2 as the text (4.65:1)
  • AAA: use #8392dd as the text (7.12:1)
  • AA: or shift the background to #8a8a8a (4.6:1)
  • AAA: or shift the background to #adadad (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151e4c 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

#151e4c reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151e4c
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 #151e4c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151e4c-9c9ec4-df814e-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