Color

#0133bc

#0133bc
hex#0133bc
rgbrgb(1, 51, 188)
hslhsl(224, 99%, 37%)
oklchoklch(0.408 0.216 263.6)
Closest name: Blue Hour (#0034ab)Relative luminance 0.06

Colors that go with #0133bc

Charcoal, Crimson and Steel 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 →

#bc8a01

#0190bc · #2d01bc

#bc0133 · #33bc01

Split-complementary

Open in tool →

#bc2d01 · #90bc01

#bc0190 · #bc8a01 · #01bc2d

Contrast

#0133bc as textRatioAAAA largeAAAFix
Aaon white
9.54:1passpasspassPasses AAA — no fix needed.
Aaon black
2.2:1failfailfail
  • AA: use #346afe as the text (4.64:1)
  • AAA: use #6c93fe as the text (7.24:1)
  • AA: or shift the background to #b3b3b3 (4.55:1)
  • AAA: or shift the background to #dedede (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 #0133bc 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

#0133bc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0133bc
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 #0133bc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0133bc-9ca2c4-df724e-221f2d-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