Color

#1a47ff

#1a47ff
hex#1a47ff
rgbrgb(26, 71, 255)
hslhsl(228, 100%, 55%)
oklchoklch(0.515 0.271 265.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1195

Colors that go with #1a47ff

Charcoal, Crimson and Amber 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 →

#ffd11a

#1abaff · #5e1aff

#ff1a47 · #47ff1a

Split-complementary

Open in tool →

#ff5e1a · #baff1a

#ff1aba · #ffd11a · #1aff5e

Contrast

#1a47ff as textRatioAAAA largeAAAFix
Aaon white
6.2:1passpassfail
  • AAA: use #0537ff as the text (7.01:1)
Aaon black
3.39:1failpassfail
  • AA: use #4268ff as the text (4.66:1)
  • AAA: use #7591ff as the text (7.25:1)
  • AA: or shift the background to #dedede (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1a47ff as the background.

Brands using this color

Fonts for this mood

#1a47ff reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1a47ff
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 #1a47ff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1a47ff-9c9fc4-df7c4e-231f2d-e9eff1?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