Glacier
Open in tool →Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth.
Named color
Ravenclaw
#0a0555
hex
#0a0555rgb
rgb(10, 5, 85)hsl
hsl(244, 89%, 18%)oklch
oklch(0.217 0.132 270.4)Relative luminance 0.0083
Ravenclaw on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 2 public brands that use it and the palettes it appears in.
Colors that go with Ravenclaw
Charcoal, Sea Green 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 Ravenclaw: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
triadicshippedSea Green completes a triad with Ravenclaw — 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 Ravenclaw's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped7 real palettes, including Penpot's brand system and Monzo's brand system put Blue beside Ravenclaw, as the supporting colour.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with Ravenclaw: 6 real palettes, including SoFi's brand system and Arctic, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with Ravenclaw: 9 real palettes, including Glacier and Air France's brand system, as the accent.
Crimson #dc143c
shippedCrimson is paired with Ravenclaw in 5 real palettes, including Nintendo's brand system and Chase's brand system, as the supporting colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with Ravenclaw: 7 real palettes, including Deep Water and Blueprint, as the lead colour.
Real palettes that use Ravenclaw
Tints & shades
Harmonies
Contrast
| Ravenclaw as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 18.01:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.17:1 | 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 Ravenclaw as the background.
Brands using this color
Palettes built around it
Fonts for this mood
Ravenclaw reads as cool, vivid, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around Ravenclaw
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 #0a0555 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/0a0555-a39cc4-dfa24e-261f2d-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