Color

#010b98

#010b98
hex#010b98
rgbrgb(1, 11, 152)
hslhsl(236, 99%, 30%)
oklchoklch(0.315 0.208 264.4)
Closest name: Everlasting Night (#000099)Relative luminance 0.0251

Colors that go with #010b98

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 →

#988e01

#015798 · #420198

#98010b · #0b9801

Split-complementary

Open in tool →

#984201 · #579801

#980157 · #988e01 · #019842

Contrast

#010b98 as textRatioAAAA largeAAAFix
Aaon white
13.98:1passpasspassPasses AAA — no fix needed.
Aaon black
1.5:1failfailfail
  • AA: use #5863fe as the text (4.63:1)
  • AAA: use #858dfe as the text (7.24:1)
  • AA: or shift the background to #949494 (4.61:1)
  • AAA: or shift the background to #b8b8b8 (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 #010b98 as the background.

Brands using this color

Fonts for this mood

#010b98 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #010b98
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 #010b98 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/010b98-9e9cc4-df8f4e-241f2d-e9eef1?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