Open House
Open in tool →Steel blue for trust, warm gold for the sold moment — an approachable brokerage that still feels established.
Color
#306391
#306391
hex
#306391rgb
rgb(48, 99, 145)hsl
hsl(208, 50%, 38%)oklch
oklch(0.486 0.092 248.1)Closest name: Chill of the Night (#256d8d)Relative luminance 0.116
Colors that go with #306391
Charcoal, Amber and Cobalt 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #306391: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #306391 in 7 real palettes, including Lemon Squeezy's brand system and Warner Bros.'s brand system, as the lead colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #306391: 5 real palettes, including Fintech Trust and Glacier, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #306391: 4 real palettes, including Coca-Cola's brand system and Gopro's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #306391 in 12 real palettes, including Amazon's brand system and Target : Expect More. Pay Less.'s brand system, as the supporting colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #306391: 5 real palettes, including Wendy's's brand system and AT&T's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #306391 in 4 real palettes, including Open House and Sapphire & Gold, as the accent.
Sienna #a0522d
complementarySienna sits directly opposite #306391 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 #306391
Tints & shades
Harmonies
Contrast
| #306391 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.33:1 | pass | pass | fail |
|
Aaon black | 3.32:1 | 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 #306391 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#306391 reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #306391
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 #306391 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/306391-9cadc4-df4e51-1f212d-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