Color

#151ed1

#151ed1
hex#151ed1
rgbrgb(21, 30, 209)
hslhsl(237, 82%, 45%)
oklchoklch(0.411 0.254 266.4)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0569

Colors that go with #151ed1

Charcoal, Crimson and Cornflower Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d1c715

#157cd1 · #6915d1

#d1151e · #1ed115

Split-complementary

Open in tool →

#d16915 · #7cd115

#d1157c · #d1c715 · #15d169

Contrast

#151ed1 as textRatioAAAA largeAAAFix
Aaon white
9.82:1passpasspassPasses AAA — no fix needed.
Aaon black
2.14:1failfailfail
  • AA: use #5d64ef as the text (4.53:1)
  • AAA: use #868cf3 as the text (7.06:1)
  • AA: or shift the background to #b0b0b0 (4.53:1)
  • AAA: or shift the background to #dbdbdb (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #151ed1 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

#151ed1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #151ed1
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #151ed1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/151ed1-9f9cc4-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