Ledger Dark
Open in tool →Gold on midnight is the private-banking cue; the mint accent keeps it from feeling old-money stuffy.
Color
#05151f
#05151f
hex
#05151frgb
rgb(5, 21, 31)hsl
hsl(203, 72%, 7%)oklch
oklch(0.187 0.03 237.3)Closest name: Midnight Edition (#0c121b)Relative luminance 0.0067
Colors that go with #05151f
Charcoal, Royal Blue and Rust 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #05151f: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #05151f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Rust #b7410e
split-complementshippedRust is a split-complement of #05151f: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #05151f on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Teal #008080
analogousshippedTeal is #05151f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #05151f in 18 real palettes, including Lemon Squeezy's brand system and Southwest Airlines's brand system, as the lead colour.
Blue #0000ff
shipped21 real palettes, including Kia's brand system and MongoDB's brand system put Blue beside #05151f, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #05151f in 10 real palettes, including Prepare your taste buds...'s brand system and Klarna US's brand system, as the accent.
Real palettes that use #05151f
Tints & shades
Harmonies
Contrast
| #05151f as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.53:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.13:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #05151f as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#05151f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #05151f
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #05151f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/05151f-9cb0c4-df4e5d-1f222d-e9f1f0?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md