# Dulux Black Opal

Source: [https://plan-home.com/color/black-opal](https://plan-home.com/color/black-opal)

Dulux Black Opal 66BB 06/077 is a deep blue-charcoal with a distinctly cool cast, reading almost black in low light while retaining a muted navy presence in brighter rooms. Its low-light value gives walls real visual weight, making it especially effective in studies, dining rooms, or a bedroom used mainly in the evening. On cabinetry or interior doors, Black Opal creates a crisp contrast against soft white walls and pale limestone or oak finishes. Pair it with chalky greys, cool off-whites, brushed nickel, and natural timber to keep the scheme clear rather than overly dark. In sunlit spaces, the blue undertone is likely to show more clearly, while warm artificial lighting can make this shade appear softer and more charcoal-led.

## Color details
- **Brand or system:** Dulux
- **Color name:** Black Opal
- **Color code:** 66BB 06/077
- **HEX:** #2C3241
- **RGB:** 44, 50, 65
- **Brightness:** Dark
- **Color families:** Blue
- **Temperature:** cool
- **Undertones:** blue

## Color codes
- **HSV:** Hue: 223° Saturation: 32.31% Value: 25.49%
- **HSL:** hsl(223, 19, 21)
- **CMYK:** Cyan: 32.31 Magenta: 23.08 Yellow: 0.0 Key: 74.51
- **YIQ:** Y: 49.916 I: -8.396 Q: 3.399
- **XYZ:** X: 3.133 Y: 3.198 Z: 5.452
- **CIE Lab:** L:20.821 a:1.607 b:-10.231
- **CIE Luv:** L:20.821 u:-3.267 v:-11.278
- **Decimal:** 2896449
- **Hunter Lab:** 17.884, -0.024, -5.556

## Equivalent and related colors
- [Little Greene Dock Blue](https://plan-home.com/color/little-greene-dock-blue-252)
- [RAL Classic Steel blue](https://plan-home.com/color/steel-blue-ral-5011)
- [Dulux Oxford Blue (Heritage)](https://plan-home.com/color/oxford-blue-uk)
- [Dulux Sapphire Splendor](https://plan-home.com/color/sapphire-splendor)
- [Dulux Cobalt Night](https://plan-home.com/color/cobalt-night)
- [RAL Classic Black blue](https://plan-home.com/color/black-blue-ral-5004)
- [Dulux Black Plum](https://plan-home.com/color/black-plum)
- [RAL Classic Sapphire blue](https://plan-home.com/color/sapphire-blue-ral-5003)
- [Dulux Galactic Sky](https://plan-home.com/color/galactic-sky)
- [RAL Classic Black grey](https://plan-home.com/color/black-grey-ral-7021)
- [RAL Classic Anthracite grey](https://plan-home.com/color/anthracite-grey-ral-7016)
- [RAL Classic Cobalt blue](https://plan-home.com/color/cobalt-blue-ral-5013)
- [RAL Classic Graphite black](https://plan-home.com/color/graphite-black-ral-9011)
- [Little Greene Lamp Black](https://plan-home.com/color/little-greene-lamp-black-228)
- [Dulux Amethyst Falls 1](https://plan-home.com/color/amethyst-falls-1)
- [RAL Classic Signal black](https://plan-home.com/color/signal-black-ral-9004)
- [Tikkurila Ink](https://plan-home.com/color/ink-m350)
- [RAL Classic Traffic black](https://plan-home.com/color/traffic-black-ral-9017)

## Lighter monochromatic colors
- [Dulux Sapphire Splendor](https://plan-home.com/color/sapphire-splendor)
- [Dulux Peaceful Night](https://plan-home.com/color/peaceful-night)
- [Dulux Oxford Blue (Heritage)](https://plan-home.com/color/oxford-blue-uk)
- [Dulux Indigo Night](https://plan-home.com/color/indigo-night)

## Complementary colors
- [Dulux Vintage Coins](https://plan-home.com/color/vintage-coins)
- [Dulux Nordic Bliss](https://plan-home.com/color/nordic-bliss)
- [Dulux Thimble Case](https://plan-home.com/color/thimble-case)
- [Dulux Common Dormouse](https://plan-home.com/color/common-dormouse)
- [Dulux Tawny Owl](https://plan-home.com/color/dulux-tawny-owl)

## Important note

Digital color values and matches are approximate. Screens, lighting, paint finish, surface texture, and application method can change how a color appears. Test a physical paint sample before making a final decision.