Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Color
#0b3983
#0b3983
hex
#0b3983rgb
rgb(11, 57, 131)hsl
hsl(217, 85%, 28%)oklch
oklch(0.365 0.134 260.1)Closest name: Deep Space Royal (#223382)Relative luminance 0.0464
Colors that go with #0b3983
Charcoal, Crimson and Steel 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 #0b3983: softer than #000 and cool enough to feel like part of the same palette.
Crimson #dc143c
triadicshippedCrimson completes a triad with #0b3983 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Steel Blue #4682b4
analogousshippedSteel Blue is #0b3983'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 Alaska Airlines's brand system and Procter & Gamble's brand system put Blue beside #0b3983, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #0b3983: 17 real palettes, including Hasbro's brand system and Unilever's brand system, as the supporting colour.
Orange Red #ff4500
shippedOrange Red is paired with #0b3983 in 5 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #0b3983 in 12 real palettes, including Nokia's brand system and Nivea's brand system, as the supporting colour.
Slate Gray #708090
shipped4 real palettes, including Ink & Paper and Bloomberg's brand system put Slate Gray beside #0b3983, as the supporting colour.
Real palettes that use #0b3983
Tints & shades
Harmonies
Contrast
| #0b3983 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.9:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.93:1 | 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 #0b3983 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
Sapphire & Gold
Open in tool →Deep sapphire and gold with a teal — old-money jewel tones on an ivory ground; heraldic without a crest.
Fonts for this mood
#0b3983 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #0b3983
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 #0b3983 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/0b3983-9ca7c4-df624e-201f2d-e9f0f1?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