RAL Design

RAL 120 45 10

Warm Slate Cyan

RAL 120 45 10 Warm Slate Cyan sits at hue 120, lightness 45, and a restrained chroma of 10, a muted earthy mid-dark cyan reminiscent of weathered slate roofing and overcast harbour waters. It is specified for coastal interior elements, heritage millwork finishes, and natural material colour coordination. The low chroma and moderate darkness produce a colour that feels mineral, grounded, and connected to maritime landscapes.

Time9:36 AM
Light
Technical Reference

Color Reference

Hex#586C74
RGBrgb(88, 108, 116)
HSLhsl(197°, 14%, 40%)
CMYKcmyk(24%, 7%, 0%, 55%)
RAL Design HLC
Hue120°
Lightness45
Chroma10

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
88
G
108
B
116
Temperature
WarmCool
Contrast Accessibility
White text
5.5:1Pass
Black text
3.8:1Fail

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)44
a* (Green-Red)-5
b* (Blue-Yellow)-7
L* (LCh)44
C* (Chroma)9
h° (Hue)232°

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 Warm Slate Cyan

Palette Generator

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

1 locked / 4 free

Reference + opposite hue with tonal variations

#2
Complementary
#3
Complementary
#4
Complementary
#5
Split Comp +
Pairwise Contrast Ratios
1.1:1
·
1.8:1
·
3.1:1
·
1.8:1

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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