Cobalt Blue Color
Cobalt Blue is a blue color with hex code #030AA7. This page covers its meaning, all color values, harmonies, colors that go with cobalt blue, shades, tints, similar colors, CSS examples, FAQs, and WCAG contrast ratios.
Cobalt Blue Color Values
What Does Cobalt Blue Mean?
Cobalt Blue belongs to the blue family of colors. Blue wins popularity surveys in every culture that runs them, and corporate design reflects it. Trust and stability are the usual words people reach for. Dark navies project authority, pale blues open a layout up, and almost nothing clashes with it. Being on the dark side, Cobalt Blue adds weight and depth. It suits text, shadows, and grounding elements more than wide-open backgrounds.
In the ISCC-NBS color naming system, Cobalt Blue is classified as a blue (nearest centroid: vivid purplish blue, #30267A). It is also known as Cobalt.
Color Harmonies
Complementary
Analogous
Triadic
Colors That Go With Cobalt Blue
Cobalt Blue and #A59D03 are complements, parked opposite each other on the wheel. Together they hit maximum contrast, so a rough 70/30 split keeps the pairing from shouting.
Analogous neighbors — #035CA5 and #4C03A5, which sit beside cobalt blue on the wheel. Pairings like this feel calm and settled, which suits backgrounds and gradients.
For an energetic three-color palette, pair cobalt blue with triadic partners #A5030B and #0BA503. All three sit evenly spaced around the wheel, so the scheme stays lively without clashing.
Build and test these combinations in our Color Wheel Tool or check text readability with the Contrast Checker.
Tints and Shades
Tints (lighter)
Shades (darker)
Similar Colors
- Royal Blue —
#0504AA(Delta E 3) - Ultramarine —
#2000B1(Delta E 7) - Indigo Blue —
#3A18B1(Delta E 7) - DarkBlue —
#00008B(Delta E 11) - Royal —
#0C1793(Delta E 15)
CSS Examples
.text { color: #030AA7; }
.background { background-color: #030AA7; }
.border { border: 2px solid #030AA7; }
.shadow { box-shadow: 0 4px 6px #030AA740; }WCAG Contrast
Frequently Asked Questions
What is the hex code for cobalt blue?
Cobalt Blue has the hex code #030AA7. In RGB notation it is rgb(3, 10, 167), in HSL it is hsl(237, 96%, 33%), and its OKLCH value is 0.336, 0.223, 264.6.
What does the color cobalt blue mean?
Blue-family colors like cobalt blue carry distinct psychological associations. Cobalt Blue belongs to the blue family of colors. Blue wins popularity surveys in every culture that runs them, and corporate design reflects it. Trust and stability are the usual words people reach for. Dark navies project authority, pale blues open a layout up, and almost nothing clashes with it. Being on the dark side, Cobalt Blue adds weight and depth. It suits text, shadows, and grounding elements more than wide-open backgrounds.
What colors go with cobalt blue?
Cobalt Blue has three easy routes: its complement #A59D03 for punch, its neighbors #035CA5 and #4C03A5 for something calmer, or triadic partners #A5030B and #0BA503 when you want energy.
Is cobalt blue a standard web color?
No — Cobalt Blue is not a CSS keyword. Use its hex value #030AA7 or any RGB/HSL equivalent in your stylesheets.
How do I make cobalt blue lighter or darker?
To lighten cobalt blue, add white to create tints; to darken it, add black to create shades. The tints and shades table above shows five computed steps of each, from #C8CBFE (lightest tint) to #01021E (darkest shade).
About Cobalt Blue
Cobalt Blue is classified as a Blue in the ISCC-NBS color naming system, within the Blue hue family. It has alternative names including Cobalt. The color is recognized by XKCD, meodai.
Use our Color Converter to convert #030AA7 to any other color format, or explore the Color Wheel to find harmonious color combinations.