Citadel
Also known as: Lynch, Risk-Reward, Cascade Tour, Blue Prince
Citadel sits on the cool side of the spectrum: a muted blue that feels calm and trustworthy. Try it in SaaS products and finance apps. Because it leans cool, balancing it with a brown keeps a palette from feeling one-note. Accessibility-wise, it needs a dark backdrop — 5.02:1 on black clears AA.
Citadel color codes
- HEX
- #6A7F8B
- RGB
- rgb(106, 127, 139)
- RGBA
- rgba(106, 127, 139, 1)
- HSL
- hsl(202, 13%, 48%)
- HSV
- hsv(202, 24%, 55%)
- CMYK
- cmyk(24%, 9%, 0%, 45%)
- LAB
- lab(51.8 -5.8 -9.2)
- OKLCH
- oklch(58.4% 0.031 233.1)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
neutral, leaning cool
subtle blue undertone in this near-neutral
Nearest standard colors
- CSS: slategray#708090 · ΔE 3.4
- RAL 7000 — Squirrel grey#7E8B92 · ΔE 5.8 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck — Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Citadel works
- Web & UI: Use it decoratively — dividers, chart series, illustration accents — and let neutrals carry the type.
- Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
- Fashion: Works as a base layer or outerwear tone that lets brighter pieces do the talking.
- Branding: The safest brand-primary family there is; differentiate with an unexpected accent.
- Fashion: One garment in this color carries an outfit; two starts to compete.
- Branding: Best in a brand's supporting palette — packaging interiors, patterns, campaign accents.
Copy as — every ecosystem
Tints, shades, and tones of Citadel
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Citadel by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Contrast & accessibility
Aa — on white
contrast 4.18:1
AA failAAA failAA large pass
Aa — on black
contrast 5.02:1
AA passAAA failAA large pass
Best text color on a Citadel background: #000000
Palettes featuring Citadel
Citadel with its complement
Soft neighbors of Citadel
Citadel triad
Similar colors
- Night Owl#5D7B89 · ΔE 3.3
- Catfish#657D82 · ΔE 4.4
- Blue Blood#6B7F81 · ΔE 5.1
- Horizon#648894 · ΔE 5.2
- Gothic#698890 · ΔE 5.2
- Nocturnal#767D86 · ΔE 5.3
Looking for maximum contrast instead? The complement of Citadel is closest to Mink.
Citadel FAQs
What color is Citadel?
Citadel is a medium blue with the hex code #6A7F8B. In HSL terms it has a hue of 202°, 13% saturation, and 48% lightness.
What is the hex code for Citadel?
The hex code for Citadel is #6A7F8B. In RGB it's rgb(106, 127, 139), and in CMYK it's cmyk(24%, 9%, 0%, 45%).
What colors go well with Citadel?
Citadel pairs naturally with brown tones from its complementary harmony, and with red accents from its split-complementary palette. Its own tints and shades always work as a monochrome scheme.
Got a photo with a color like this? Identify it with the analyzer — free, instant, private.