Starting color

CosmicCobalt

#2E2D88 · rgb(46, 45, 136) · hsl(241, 50%, 35%)

Complementary colors

#2e2d86 · #84862d

Analogous colors

#2d5886 · #2e2d86 · #5b2d86

Triadic colors

#2e2d86 · #862e2d · #2d862e

Split-complementary colors

#2e2d86 · #865b2d · #58862d

Tetradic colors

#2e2d86 · #862d58 · #84862d · #2d865b

Monochromatic colors

#141339 · #2a297a · #4240bf · #8685d6 · #c6c6ec

Ready-made palettes with CosmicCobalt

Complementary palette

The base color paired with its opposite on the wheel for maximum contrast, plus two neutrals and a soft tint.

#2E2D88 · #84862d · #7270c2 · #f4f4f5 · #18181b

Analogous palette

Neighboring hues on the color wheel create a calm, cohesive scheme with a light tint and a deep shade.

#2d5886 · #2E2D88 · #5b2d86 · #7270c2 · #0d0d26

Triadic palette

Three hues spaced evenly around the wheel for a bold, balanced palette anchored by two neutrals.

#2E2D88 · #862e2d · #2d862e · #f4f4f5 · #18181b

Monochromatic palette

A single hue stepped from light to dark for a clean, elegant and foolproof palette.

#f0f0fa · #9d9cde · #4644c1 · #26256f · #080817

Explore CosmicCobalt Explore on the color wheelGenerate a palette

If you are wondering what colors go with CosmicCobalt, start with its opposite on the wheel — a complementary #84862d — then soften the pairing with the analogous, triadic and monochromatic schemes above.

Frequently asked questions

CosmicCobalt's complementary color is #84862d. Analogous neighbors, triadic accents and monochromatic tints of the same hue all pair naturally with it too.

Good to know facts

  • Every swatch row is a complete scheme you can copy straight into CSS.
  • The color wheel can regenerate these harmonies for any base you like.

Related tools

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From the blog

Guides that go deeper into what this tool does.

Rainbow Color Codes: Hex and RGB for Every Shade of the Spectrum
Color Code

Rainbow Color Codes: Hex and RGB for Every Shade of the Spectrum

The real hex and RGB codes for all 7 ROYGBIV rainbow colors, why there's no single "official" rainbow, and CSS code to build your own rainbow gradient.

The 60-30-10 Rule: A Simple Formula for Color in Design
Color Theory

The 60-30-10 Rule: A Simple Formula for Color in Design

The 60-30-10 color rule explained — how to split any palette into a dominant, secondary, and accent color, with real hex codes and CSS for web design.

Tint vs. Shade vs. Tone: What's the Actual Difference?
Color Theory

Tint vs. Shade vs. Tone: What's the Actual Difference?

Tint (+white), shade (+black), and tone (+gray) explained clearly — with a real hex example, CSS code, and where each one actually belongs in design.