Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Color
#00035b
#00035b
hex
#00035brgb
rgb(0, 3, 91)hsl
hsl(238, 100%, 18%)oklch
oklch(0.217 0.145 264.2)Closest name: Ravenclaw (#0a0555)Relative luminance 0.0082
Colors that go with #00035b
Charcoal, Steel Blue 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #00035b: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #00035b'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 Penpot's brand system and Monzo's brand system put Blue beside #00035b, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #00035b: 8 real palettes, including Glacier and Air France's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #00035b: 4 real palettes, including Deep Water and Twilio's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #00035b: 11 real palettes, including Paramount+'s brand system and British Airways's brand system, as the lead colour.
Royal Blue #4169e1
shippedRoyal Blue is paired with #00035b in 8 real palettes, including Spectrum's brand system and Penpot's brand system, as the accent.
Slate Gray #708090
shipped4 real palettes, including Clinic and Slate Workspace put Slate Gray beside #00035b, as the supporting colour.
Real palettes that use #00035b
Tints & shades
Harmonies
Contrast
| #00035b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.16:1 | 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 #00035b as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#00035b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #00035b
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 #00035b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/00035b-9f9cc4-df944e-251f2d-e9edf1?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