Color

#1f018e

#1f018e
hex#1f018e
rgbrgb(31, 1, 142)
hslhsl(253, 99%, 28%)
oklchoklch(0.307 0.194 273.7)
Closest name: Dramatic Blue (#240093)Relative luminance 0.0227

Colors that go with #1f018e

Steel Blue, Cobalt Blue and Crimson 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 →

#6f8e01

#01298e · #66018e

#8e1f01 · #018e1f

Split-complementary

Open in tool →

#8e6601 · #298e01

#8e0129 · #6f8e01 · #018e66

Contrast

#1f018e as textRatioAAAA largeAAAFix
Aaon white
14.45:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #7c58fe as the text (4.68:1)
  • AAA: use #9f85fe as the text (7.26:1)
  • AA: or shift the background to #919191 (4.59:1)
  • AAA: or shift the background to #b5b5b5 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1f018e 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

#1f018e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1f018e
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 #1f018e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1f018e-a99cc4-dfb84e-281f2d-e9ebf1?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