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
#2a5b59
#2a5b59
hex
#2a5b59rgb
rgb(42, 91, 89)hsl
hsl(178, 37%, 26%)oklch
oklch(0.437 0.053 191.8)Closest name: Enchanting Ivy (#315955)Relative luminance 0.087
Colors that go with #2a5b59
Blue, Cadet Blue and Denim 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 Rolex's brand system and Jeep's brand system put Blue beside #2a5b59, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #2a5b59: 4 real palettes, including Paper & Pine and Alpine, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #2a5b59: 7 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #2a5b59 in 5 real palettes, including Fireside and Mid-Century, as the accent.
Medium Sea Green #3cb371
shippedMedium Sea Green is paired with #2a5b59 in 4 real palettes, including Mint Modern and Console Light, as the lead colour.
Midnight Blue #191970
shipped7 real palettes, including Lufthansa's brand system and First Snow put Midnight Blue beside #2a5b59, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #2a5b59: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Sienna #a0522d
split-complementshippedSienna is a split-complement of #2a5b59: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use #2a5b59
Tints & shades
Harmonies
Contrast
| #2a5b59 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.67:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.74:1 | 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 #2a5b59 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
#2a5b59 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #2a5b59
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 #2a5b59 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/2a5b59-a2bcbe-d45999-1f282d-e9f1ed?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