Color Conversion
#0f172a
Variations
The purpose of this section is to accurately produce tints (pure white added) and shades (pure black added) of your selected color in 10% increments.
Pro Tip: Use shades for hover states and shadows, tints for highlights and backgrounds.
Shades
Darker variations created by adding black to your base color.
Tints
Lighter variations created by adding white to your base color.
Common Use Cases
- • UI component states (hover, active, disabled)
- • Creating depth with shadows and highlights
- • Building consistent color systems
Design System Tip
These variations form the foundation of a cohesive color palette. Export them to maintain consistency across your entire project.
Color Combinations
Each harmony has its own mood. Use harmonies to brainstorm color combos that work well together.
How to Use
Click on any color to copy its hex value. These combinations are mathematically proven to create visual harmony.
Why It Matters
Color harmonies create balance and evoke specific emotions in your designs.
Complement
A color and its opposite on the color wheel, +180 degrees of hue. High contrast.
Split-complementary
A color and two adjacent to its complement, +/-30 degrees of hue from the value opposite the main color. Bold like a straight complement, but more versatile.
Triadic
Three colors spaced evenly along the color wheel, each 120 degrees of hue apart. Best to allow one color to dominate and use the others as accents.
Analogous
Three colors of the same luminance and saturation with hues that are adjacent on the color wheel, 30 degrees apart. Smooth transitions.
Monochromatic
Three colors of the same hue with luminance values +/-50%. Subtle and refined.
Tetradic
Two sets of complementary colors, separated by 60 degrees of hue.
Color Theory Principles
Balance
Use one dominant color, support with secondary, and accent sparingly.
Contrast
Ensure sufficient contrast for readability and accessibility.
Harmony
Colors should work together to create a unified visual experience.
Color Contrast Checker
Test color combinations to ensure they meet WCAG accessibility standards for text readability.
Text Color
Background Color
Contrast
WCAG Standards
Advanced Contrast Checker
Fine-tune with sliders, multiple previews & more
Everybody is a Genius. But If You Judge a Fish by Its Ability to Climb a Tree, It Will Live Its Whole Life Believing that It is Stupid.
Technical Formats
Practical Formats
Color Analysis
Blindness Simulator
Creative Aspects
Frequently asked questions
- What color is #0F172A?
- #0F172A is Abyssal Ledger – A crushingly deep, cool navy with an almost black, inky core and a faint indigo halo. It feels disciplined and confidential — like a private ledger kept under dim lamplight.
- What does Abyssal Ledger symbolize?
- authority and professionalism, discretion and confidentiality, depth and stability, maritime/naval heritage, nocturnal mystery. In Western corporate contexts it reads as dependable and professional (similar to navy uniforms). In East Asian palettes, deep indigo values tradition and formality, while in maritime cultures it evokes the sea and naval authority. Some African and South Asian textiles use deep indigo as a sign of artisanal craft and status.
- Where is Abyssal Ledger used in design?
- In spaces or interfaces, this color recedes visually and reduces perceived noise, allowing content and accents to stand out; it gives users a sense of seriousness and focus without the harshness of pure black. Because it carries subtle blue undertones, it also calms and reassures rather than energizing the viewer.