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
#315e4a
#315e4a
hex
#315e4argb
rgb(49, 94, 74)hsl
hsl(153, 31%, 28%)oklch
oklch(0.443 0.06 163.4)Closest name: Ethereal Woods (#3e5e4e)Relative luminance 0.0915
Colors that go with #315e4a
Cadet Blue, Copper and Crimson 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.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #315e4a: 4 real palettes, including Paper & Pine and Alpine, as the supporting colour.
Copper #b87333
shippedDesigners have shipped Copper with #315e4a: 4 real palettes, including Desert Road and Clay & Linen, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #315e4a in 5 real palettes, including Codecademy's brand system and Gemstone, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #315e4a: 8 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #315e4a in 5 real palettes, including Fireside and Mid-Century, as the accent.
Midnight Blue #191970
shipped5 real palettes, including Lufthansa's brand system and Open House put Midnight Blue beside #315e4a, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #315e4a: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Medium Violet Red #c71585
complementaryMedium Violet Red sits directly opposite #315e4a on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Real palettes that use #315e4a
Tints & shades
Harmonies
Contrast
| #315e4a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.42:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.83:1 | 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 #315e4a as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#315e4a reads as muted, dark, luxury. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #315e4a
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 #315e4a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/315e4a-a2beb5-d459cc-1f2d2d-e9f1ea?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