brandsweets

Color

#1d01ef

#1d01ef
hex#1d01ef
rgbrgb(29, 1, 239)
hslhsl(247, 99%, 47%)
oklchoklch(0.437 0.294 267)
Closest name: Burning Ultrablue (#150aec)Relative luminance 0.0651
CoolVividTechnicalModern
Open in palette toolCheck contrastWhat goes with it ↓

Colors that go with #1d01ef

Charcoal, Crimson and Cobalt 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.

Real palettes that use #1d01ef

Activision· brandAlaska Airlines· brandBBC· brandBinance· brand

Tints & shades

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

Harmonies

Complementary

Open in tool →
1d01efd3ef01

#d3ef01

Analogous

Open in tool →
1d01ef015cef9401ef

#015cef · #9401ef

Triadic

Open in tool →
1d01efef1d0101ef1d

#ef1d01 · #01ef1d

Split-complementary

Open in tool →
1d01efef94015cef01

#ef9401 · #5cef01

Tetradic

Open in tool →
1d01efef015cd3ef0101ef94

#ef015c · #d3ef01 · #01ef94

Contrast

#1d01ef as textRatioAAAA largeAAAFix
Aaon white
9.12:1passpasspassPasses AAA — no fix needed.
Aaon black
2.3:1failfailfail
  • AA: use #6f5dfe as the text (4.67:1)
  • AAA: use #9385fe as the text (7.03:1)
  • AA: or shift the background to #b8b8b8 (4.6:1)
  • AAA: or shift the background to #e3e3e3 (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 #1d01ef as the background.

Brands using this color

Fonts for this mood

#1d01ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →
mcpConnect your agent — build around #1d01ef
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 #1d01ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d01ef-a59cc4-dfaa4e-271f2d-e9ecf1?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