Bookshop
Open in tool →Chestnut and forest on cream read like a cloth-bound spine; the palette recedes so covers and type do the talking.
Color
#215951
#215951
hex
#215951rgb
rgb(33, 89, 81)hsl
hsl(171, 46%, 24%)oklch
oklch(0.424 0.06 182.5)Closest name: Enchanting Ivy (#315955)Relative luminance 0.0806
Colors that go with #215951
Blue, Cadet Blue and Copper 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.
Blue #0000ff
shipped4 real palettes, including Warp's brand system and Alaska Airlines's brand system put Blue beside #215951, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #215951: 4 real palettes, including Paper & Pine and Alpine, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #215951: 4 real palettes, including Desert Road and Clay & Linen, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #215951 in 4 real palettes, including Codecademy's brand system and Gemstone, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #215951: 7 real palettes, including Hinge's brand system and Jack Daniel's's brand system, as the accent.
Emerald Green #50c878
shippedEmerald Green is paired with #215951 in 4 real palettes, including Neon's brand system and Chime's brand system, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #215951: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Teal #008080
analogousshippedTeal is #215951's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #215951
Tints & shades
Harmonies
Contrast
| #215951 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.61:1 | 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 #215951 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
#215951 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #215951
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 #215951 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/215951-a2bebd-d459a7-1f292d-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