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Aqua and RoyalBlue

Contrasting color combination with 3.44:1 contrast ratio

#0FF0FE
#4169E1

Color Values

Aqua
HEX #0FF0FE
RGB 15, 240, 254
HSL 184, 99%, 53%
RoyalBlue
HEX #4169E1
RGB 65, 105, 225
HSL 225, 73%, 57%

Harmony: Contrasting

These colors sit far enough apart on the wheel to create clear contrast without falling into a named harmony. The pairing works through difference rather than relationship, which suits designs that want variety over cohesion.

The hue angle between Aqua and RoyalBlue is 41 degrees. You can explore these relationships interactively in our Color Wheel Tool.

WCAG Contrast

3.44:1
Aqua background with RoyalBlue text
AA large text only

UI Preview

Aqua surface

Sample text on a aqua background demonstrates readability and visual hierarchy.

RoyalBlue surface

Sample text on a royalblue background demonstrates readability and visual hierarchy.

Design Tokens

CSS Variables

:root {
  --color-a: #0FF0FE;
  --color-b: #4169E1;
  --color-a-rgb: 15, 240, 254;
  --color-b-rgb: 65, 105, 225;
}

JSON

{
  "name": "Aqua and RoyalBlue",
  "colors": [
    {
      "name": "Aqua",
      "hex": "#0FF0FE",
      "rgb": [
        15,
        240,
        254
      ]
    },
    {
      "name": "RoyalBlue",
      "hex": "#4169E1",
      "rgb": [
        65,
        105,
        225
      ]
    }
  ],
  "harmony": "Contrasting",
  "contrastRatio": 3.44
}

Explore These Colors

Frequently Asked Questions

Do aqua and royalblue go together?

Yes. Aqua and RoyalBlue form a contrasting color combination. These colors sit far enough apart on the wheel to create clear contrast without falling into a named harmony. The pairing works through difference rather than relationship, which suits designs that want variety over cohesion. The pairing has a WCAG contrast ratio of 3.44:1, which passes AA for large text but not for body text.

What is the contrast ratio between aqua and royalblue?

The WCAG 2.1 contrast ratio between Aqua (#0FF0FE) and RoyalBlue (#4169E1) is 3.44:1. This passes AA for large text (18pt+ or 14pt+ bold) but not for normal-sized body text.

How do I use aqua and royalblue in design?

A safe starting point is the 60/30/10 rule: give one color about 60 percent of the surface area, the other about 30 percent, and reserve the remaining 10 percent for an accent or neutral. If one color is significantly darker, use it for text or structural elements and the lighter one for backgrounds. Test the result with our Contrast Checker if text is involved.

What are the hex and RGB values for aqua and royalblue?

Aqua has the hex code #0FF0FE and RGB values rgb(15, 240, 254). RoyalBlue has the hex code #4169E1 and RGB values rgb(65, 105, 225). You can copy these directly into CSS or use the design tokens provided on this page.