Flat Blue Color
Flat Blue is a blue color with hex code #3C73A8. This page covers its meaning, all color values, harmonies, colors that go with flat blue, shades, tints, similar colors, CSS examples, FAQs, and WCAG contrast ratios.
Flat Blue Color Values
What Does Flat Blue Mean?
Flat 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. Flat Blue sits at a mid-lightness, which keeps it readable on both white and black without much fuss.
In the ISCC-NBS color naming system, Flat Blue is classified as a blue (nearest centroid: moderate blue, #436B95).
Color Harmonies
Complementary
Analogous
Triadic
Colors That Go With Flat Blue
Flat Blue and #A9713D 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 — #3DA9A7 and #3D3FA9, which sit beside flat blue on the wheel. Pairings like this feel calm and settled, which suits backgrounds and gradients.
For an energetic three-color palette, pair flat blue with triadic partners #A93D75 and #75A93D. 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
- Muted Blue —
#3B719F(Delta E 4) - SteelBlue —
#4682B4(Delta E 6) - Matisse —
#1B659D(Delta E 6) - Cool Blue —
#4984B8(Delta E 7) - Nice Blue —
#107AB0(Delta E 7)
CSS Examples
.text { color: #3C73A8; }
.background { background-color: #3C73A8; }
.border { border: 2px solid #3C73A8; }
.shadow { box-shadow: 0 4px 6px #3C73A840; }WCAG Contrast
Frequently Asked Questions
What is the hex code for flat blue?
Flat Blue has the hex code #3C73A8. In RGB notation it is rgb(60, 115, 168), in HSL it is hsl(209, 47%, 45%), and its OKLCH value is 0.542, 0.102, 249.4.
What does the color flat blue mean?
Blue-family colors like flat blue carry distinct psychological associations. Flat 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. Flat Blue sits at a mid-lightness, which keeps it readable on both white and black without much fuss.
What colors go with flat blue?
Flat Blue has three easy routes: its complement #A9713D for punch, its neighbors #3DA9A7 and #3D3FA9 for something calmer, or triadic partners #A93D75 and #75A93D when you want energy.
Is flat blue a standard web color?
No — Flat Blue is not a CSS keyword. Use its hex value #3C73A8 or any RGB/HSL equivalent in your stylesheets.
How do I make flat blue lighter or darker?
To lighten flat 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 #DDE8F3 (lightest tint) to #0B151E (darkest shade).
About Flat Blue
Flat Blue is classified as a Blue in the ISCC-NBS color naming system, within the Blue hue family. It has The color is recognized by XKCD, meodai.
Use our Color Converter to convert #3C73A8 to any other color format, or explore the Color Wheel to find harmonious color combinations.