Named color

Bonne Nuit

#3a4866
hex#3a4866
rgbrgb(58, 72, 102)
hslhsl(221, 28%, 31%)
oklchoklch(0.403 0.054 264.8)
Relative luminance 0.0649

Bonne Nuit on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 1 public brand that uses it and the palettes it appears in.

Colors that go with Bonne Nuit

Steel Blue, Blue and Blush Pink 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 →

#655739

#395d65 · #413965

#653947 · #476539

Split-complementary

Open in tool →

#654139 · #5d6539

#65395d · #655739 · #396541

Contrast

Bonne Nuit as textRatioAAAA largeAAAFix
Aaon white
9.14:1passpasspassPasses AAA — no fix needed.
Aaon black
2.3:1failfailfail
  • AA: use #5f75a5 as the text (4.57:1)
  • AAA: use #8697bb as the text (7.16:1)
  • AA: or shift the background to #b8b8b8 (4.61:1)
  • AAA: or shift the background to #e3e3e3 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Bonne Nuit as the background.

Brands using this color

mcpConnect your agent — build around Bonne Nuit
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 #3a4866 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a4866-9ca4c4-df6b4e-211f2d-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