Color
#3e4e79
#3e4e79rgb(62, 78, 121)hsl(224, 32%, 36%)oklch(0.43 0.074 267.7)Colors that go with #3e4e79
Steel Blue, Blue and Cadet 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.
Steel Blue #4682b4
analogousshippedSteel Blue is #3e4e79's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped4 real palettes, including CVS's brand system and Alaska Airlines's brand system put Blue beside #3e4e79, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #3e4e79: 4 real palettes, including Dusk and Open House, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #3e4e79 in 9 real palettes, including Codecademy's brand system and Amazon's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #3e4e79: 10 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Goldenrod #daa520
shippedGoldenrod shows up next to #3e4e79 in 4 real palettes, including Open House and Sapphire & Gold, as the accent.
Midnight Blue #191970
shipped12 real palettes, including First Snow and Microsoft's brand system put Midnight Blue beside #3e4e79, as that palette's text colour.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #3e4e79: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #3e4e79
Tints & shades
Harmonies
Contrast
| #3e4e79 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.17:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.57:1 | 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 #3e4e79 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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 #3e4e79 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/3e4e79-9ca2c4-df724e-221f2d-e9eff1?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