Color
#315e77
#315e77rgb(49, 94, 119)hsl(201, 42%, 33%)oklch(0.461 0.064 234.8)Colors that go with #315e77
Royal Blue, Sienna and Blue 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.
Royal Blue #4169e1
analogousshippedRoyal Blue is #315e77's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #315e77 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped8 real palettes, including Tesco's brand system and Activision's brand system put Blue beside #315e77, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #315e77: 4 real palettes, including Open House and Dusk, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #315e77: 4 real palettes, including Fintech Trust and Unilever's brand system, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #315e77: 4 real palettes, including Dusk and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #315e77 in 15 real palettes, including Codecademy's brand system and Gemstone, as the accent.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #315e77: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #315e77
Tints & shades
Harmonies
Contrast
| #315e77 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 3:1 | 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 #315e77 as the background.
Brands using this color
Fonts for this mood
#315e77 reads as cool, modern. The font library is tagged with the same vocabulary:
Point 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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #315e77 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/315e77-9cb1c4-df4e62-1f222d-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