RAL Design

RAL 000 15 00

Jet Dark

RAL 000 15 00 Jet Dark anchors the bottom of the RAL Design grey axis at lightness 15 with zero chroma, the darkest achievable neutral in the system. It is specified for blackout surfaces, cinema and home-theatre interiors, and premium automotive trim where maximum light absorption and visual depth are essential. Despite its extreme darkness, it retains a fractional grey quality that distinguishes it from absolute black, lending surfaces a refined, velvety finish.

Time9:36 AM
Light
Technical Reference

Color Reference

Hex#1F1F1F
RGBrgb(31, 31, 31)
HSLhsl(0°, 0%, 12%)
CMYKcmyk(0%, 0%, 0%, 88%)
RAL Design HLC
Hue0°
Lightness15
Chroma0

The RAL Design system uses Hue-Lightness-Chroma (HLC) notation. Hue describes the color family (0-360°), Lightness describes brightness (0-100), and Chroma describes saturation intensity (0-100+).

Color Analysis
RGB Composition
R
31
G
31
B
31
Temperature
WarmCool
Contrast Accessibility
White text
16.5:1Pass
Black text
1.3:1Fail

WCAG 2.1 AA requires 4.5:1 contrast for normal text. Results show this color as a background.

Spectrum & Perceptual Position

Hue Spectrum
60°120°180°240°300°360°
CIELAB a*b* Chromaticity
-3003060-3003060a* (Green ← → Red)b* (Blue ← → Yellow)
L* (Lightness)12
a* (Green-Red)0
b* (Blue-Yellow)0
L* (LCh)12
C* (Chroma)0
h° (Hue)158°

CIELAB is a perceptually uniform color space. Euclidean distance between two colors in this diagram closely matches human visual difference. The dot size shows your selected color; slightly larger dots are the nearest perceptual neighbors.

Color Harmonies

Build a Palette Around Jet Dark

Palette Generator

Select a harmony type, then press Space to reroll unlocked colors.

1 locked / 4 free

Reference + opposite hue with tonal variations

Reference
#2
Complementary
#3
Complementary
#4
Complementary
#5
Split Comp +
Pairwise Contrast Ratios
1:1
·
2.2:1
·
2.4:1
·
1.5:1

Contrast ratios follow WCAG 2.1 guidelines. Green (≥4.5:1) passes AA for normal text. Amber (≥3:1) passes for large text only. Grey indicates low contrast.

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