Chalkboard
Open in tool →Slate green with chalk cream and a coral — nostalgic without being twee.
Color
#152d28
#152d28
hex
#152d28rgb
rgb(21, 45, 40)hsl
hsl(167, 36%, 13%)oklch
oklch(0.276 0.032 178.8)Closest name: Bitter Liquorice (#262926)Relative luminance 0.0219
Colors that go with #152d28
Charcoal, Rust and Sienna 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 #152d28: softer than #000 and cool enough to feel like part of the same palette.
Rust #b7410e
split-complementshippedRust is a split-complement of #152d28: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Sienna #a0522d
triadicshippedSienna completes a triad with #152d28 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Slate Blue #6a5acd
triadicshippedSlate Blue completes a triad with #152d28 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Teal #008080
analogousshippedTeal is #152d28's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue Violet #8a2be2
shippedBlue Violet is paired with #152d28 in 4 real palettes, including ClickUp's brand system and Klarna US's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Blush Pink #e8b4b8
shippedBlush Pink is paired with #152d28 in 6 real palettes, including Rain Garden and Graphite Mono, as the accent — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #152d28
Tints & shades
Harmonies
Contrast
| #152d28 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.6:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.44:1 | 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 #152d28 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#152d28 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #152d28
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 #152d28 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/152d28-a2bebb-d459af-1f2a2d-e9f1ec?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