Bluebell
Also known as: Depths of Night, Perfect Dark, Royal Night, Ultramarine Highlight
With its cool undertone, Bluebell (#333399) comes across as cool and professional. Designers reach for it in SaaS products and finance apps. Match it with brown accents when the design calls for energy over calm. On white it reads clearly at 10.12:1 contrast — safe for body text under WCAG AA.
Bluebell color codes
- HEX
- #333399
- RGB
- rgb(51, 51, 153)
- RGBA
- rgba(51, 51, 153, 1)
- HSL
- hsl(240, 50%, 40%)
- HSV
- hsv(240, 67%, 60%)
- CMYK
- cmyk(67%, 67%, 0%, 40%)
- LAB
- lab(26.9 26.6 -57.0)
- OKLCH
- oklch(39.1% 0.162 275.9)
Color intelligence
Displays accurately on every screen and translates well to print.
Temperature
cool
Nearest standard colors
- CSS: darkslateblue#483D8B · ΔE 5.2
- RAL 5002 — Ultramarine blue#2B2C7C · ΔE 4.8 · 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 Bluebell works
- Web & UI: Use it directly for text on light surfaces; it clears AA contrast without adjustment.
- Interiors: Use it where you want the eye to land — front door, built-ins, or one bold wall.
- Fashion: One garment in this color carries an outfit; two starts to compete.
- Branding: The safest brand-primary family there is; differentiate with an unexpected accent.
- Web & UI: Reads as an interactive accent: fills, hovers, focus rings. Keep body text in a darker neutral.
- Branding: Best in a brand's supporting palette — packaging interiors, patterns, campaign accents.
Copy as — every ecosystem
Tints, shades, and tones of Bluebell
Tints (lighter)
Shades (darker)
Color harmonies
Palettes built from Bluebell 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 10.12:1
AA passAAA passAA large pass
Aa — on black
contrast 2.07:1
AA failAAA failAA large fail
Best text color on a Bluebell background: #ffffff
Palettes featuring Bluebell
Bluebell with its complement
Soft neighbors of Bluebell
Bluebell triad
Similar colors
- Blue Hour#0034AB · ΔE 4.1
- Smalt#003399 · ΔE 4.2
- Blueberry#464196 · ΔE 4.7
- Space Dust#002299 · ΔE 5.2
- Denim#2243B6 · ΔE 6.4
- Royalty#5930A9 · ΔE 6.6
Looking for maximum contrast instead? The complement of Bluebell is closest to Pineapple.
Bluebell FAQs
What color is Bluebell?
Bluebell is a medium blue with the hex code #333399. In HSL terms it has a hue of 240°, 50% saturation, and 40% lightness.
What is the hex code for Bluebell?
The hex code for Bluebell is #333399. In RGB it's rgb(51, 51, 153), and in CMYK it's cmyk(67%, 67%, 0%, 40%).
What colors go well with Bluebell?
Bluebell pairs naturally with brown tones from its complementary harmony. Its own tints and shades always work as a monochrome scheme.
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