Dusk
Open in tool →Slate blue with a copper accent — calm, professional, slightly editorial; suits consultancies and journals.
Color
#406187
#406187
hex
#406187rgb
rgb(64, 97, 135)hsl
hsl(212, 36%, 39%)oklch
oklch(0.484 0.073 252.7)Closest name: Admiral Blue (#50647f)Relative luminance 0.1139
Colors that go with #406187
Charcoal, Sienna and Amber 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #406187: softer than #000 and cool enough to feel like part of the same palette.
Sienna #a0522d
complementaryshippedSienna sits directly opposite #406187 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #406187 in 6 real palettes, including McDonald's's brand system and Lemon Squeezy's brand system, as the lead colour.
Blue #0000ff
shipped4 real palettes, including Activision's brand system and Tesco's brand system put Blue beside #406187, as the accent.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #406187: 6 real palettes, including Fintech Trust and Glacier, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #406187: 4 real palettes, including Dusk and Desert Road, as the accent.
Crimson #dc143c
shippedCrimson is paired with #406187 in 17 real palettes, including McDonald's's brand system and Wendy's's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #406187: 4 real palettes, including Venmo's brand system and Deep Water, as the supporting colour.
Real palettes that use #406187
Tints & shades
Harmonies
Contrast
| #406187 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.41:1 | pass | pass | fail |
|
Aaon black | 3.28:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #406187 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
#406187 reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #406187
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 #406187 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/406187-9caac4-df564e-1f202d-e9f1f1?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