Color

#101d65

#101d65
hex#101d65
rgbrgb(16, 29, 101)
hslhsl(231, 73%, 23%)
oklchoklch(0.278 0.126 268.2)
Closest name: Black Sea Night (#052462)Relative luminance 0.0193

Tints & shades

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

Harmonies

Complementary

Open in tool →

#655910

#104765 · #2e1065

#65101d · #1d6510

Split-complementary

Open in tool →

#652e10 · #476510

#651047 · #655910 · #10652e

Contrast

#101d65 as textRatioAAAA largeAAAFix
Aaon white
15.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.39:1failfailfail
  • AA: use #5369e4 as the text (4.51:1)
  • AAA: use #7f8feb as the text (7.03:1)
  • AA: or shift the background to #8c8c8c (4.51:1)
  • AAA: or shift the background to #b3b3b3 (7.23:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #101d65 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

#101d65 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #101d65
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #101d65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/101d65-9c9ec4-df834e-231f2d-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