Color

#0d17ce

#0d17ce
hex#0d17ce
rgbrgb(13, 23, 206)
hslhsl(237, 88%, 43%)
oklchoklch(0.399 0.257 265.5)
Closest name: mediumblue (#0000cd)Relative luminance 0.0515

Colors that go with #0d17ce

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 →

#cec40d

#0d77ce · #640dce

#ce0d17 · #17ce0d

Split-complementary

Open in tool →

#ce640d · #77ce0d

#ce0d77 · #cec40d · #0dce64

Contrast

#0d17ce as textRatioAAAA largeAAAFix
Aaon white
10.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.03:1failfailfail
  • AA: use #5c64f5 as the text (4.6:1)
  • AAA: use #878df7 as the text (7.18:1)
  • AA: or shift the background to #ababab (4.5:1)
  • AAA: or shift the background to #d6d6d6 (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 #0d17ce as the background.

Brands using this color

Fonts for this mood

#0d17ce reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0d17ce
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 #0d17ce and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0d17ce-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