Black Olive (RAL 6015)

An extremely dark RAL black olive, deep and weighty, a standard industrial dark color.

HEX#3D3D39

RGBrgb(61, 61, 57)

HSLhsl(60, 3%, 23%)

HSVhsv(60, 7%, 24%)

CMYKcmyk(0%, 0%, 7%, 76%)

HEXA#3D3D39FF

RGBArgba(61, 61, 57, 1)

HSLAhsla(60, 3%, 23%, 1)

OKLCHoklch(61.9%, 0.006, 107)

LCHlch(55.9%, 6.1, 192)

🎨 Color Palettes

Analogous2-3 adjacent hues (≤60°)

Triadic3 hues spaced 120° apart

Split ComplementaryMain color + colors adjacent to its complement

Complementary2 hues spaced 180° apart

Tetradic (Rectangle)4 hues forming a rectangle

MonochromaticSingle hue with varying saturation and lightness

♿ WCAG Contrast Colors

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Aa14px Body

High Contrast Text

#CECECARatio 6.9:1AA

Suitable for body text, headings, and primary content, ensuring readability for all users

Aa14px Body

Standard Text

#A6A8A3Ratio 4.5:1AA

Suitable for regular body content, meeting WCAG AA standards

Aa14px Body

Large Text / UI Components

#818881Ratio 3:1AA Large

Suitable for large text (≥18px bold or ≥24px), icons, UI component boundaries

Aa14px Body

Decorative / Dividers

#636969Ratio 2:1Fail

Suitable for decorative elements, dividers, non-essential text

📊 Color Scales

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Lightness VariationFixed hue and saturation, proportional lightness scaling 30%→100%

#121211

#1A1A19

#20201E

#272725

#2F2F2D

#353531

#3C3C39

Saturation VariationFixed hue and lightness, proportional saturation scaling 40%→100%

#3B3B3A

#3C3C39

Lightness + Saturation Mixed VariationSimultaneous lightness and saturation proportional scaling

#121212

#1A1A19

#1F1F1E

#272725

#2F2F2D

#353531

#3C3C39

Hue Fine-TuningFixed saturation and lightness, stepwise hue fine-tuning ±15°

#3C3C39

💡 Use Cases

🏭

Steel Plant Equipment

The shell of blast furnaces and the beams of heavy cranes; Black Olive's dark color absorbs heat radiation and easily conceals oil stains, a practical choice for heavy industry.

⛓️

Marine Anchor Chain

The anti-rust coating on giant anchor chains of ocean-going freighters; Black Olive provides lasting anti-corrosion protection in salty sea winds and seawater immersion.

🏋️

Strength Equipment

The baked enamel finish on barbell plates and squat racks in gyms; Black Olive is steady and weighty, inspiring strength trainees' determination to push their limits.

🔩

Industrial Fasteners

High-strength bolts for large bridges and buildings; Black Olive's black oxide finish is rust-resistant and wear-proof, silently ensuring structural safety in hidden places.

📜 Origin & History

Black Olive RAL 6015 is the olive tone in the RAL color system that has almost completely shed its green, distinguishable from pure black only by an extremely faint yellow-green undertone, established as the ultimate dark standard for heavy industrial equipment.

🧠 Color Psychology

Weighty as a MountainAs immovable as a ten-thousand-ton hydraulic press, Black Olive displays the absolute power of heavy industry and the steadiness of ballast with its darkest tone.

Taciturn and SilentBearing immense weight without a word, Black Olive is the most silent executor, turning all words into quiet action and solid results.

Unfathomably DeepA green almost completely swallowed by darkness, as immeasurable as an abyss, deterring shallow gazes and leaving only reverence.

Utterly SolidSuggestive of the absolute rigidity of cast steel, Black Olive represents unbending principles and a character that will not deform under immense pressure.

Fighting AloneExisting alone at the boundary between pure black and dark green, accepted by no color family and disdainful of acceptance—a solitary, tough-boned pride.

Bearing Infinite WeightThe heaviest machinery and the dirtiest work are borne by this dark color; Black Olive accommodates the crudest, ugliest side of industrial society without changing its hue.

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