#307CC9 — Blue
#307CC9 is a blue in the Blue family. In practice it looks like a balanced medium blue, and it is also commonly known as Blue, Cobalt Blue. Below are all of its color space values, an 11-step scale, harmony palettes and accessibility data.
#307CC9
Tints and shades (50–950)
Accessibility
Contrast on white
4.33:1
Contrast on black
4.85:1
- AA (4.5:1) on whiteFail
- AA Large (3:1) on whitePass
- AAA (7:1) on whiteFail
- AAA Large (4.5:1) on whiteFail
- UI components (3:1) on whitePass
Need a passing variant? Repair this color in the contrast checker.
Complementary palette
Analogous palette
Triadic palette
Copy-ready CSS
brand-scale.css
:root {
--brand-50: oklch(0.971 0.01 251.8); /* #f1f6fc */
--brand-100: oklch(0.936 0.022 251.8); /* #e0ebf9 */
--brand-200: oklch(0.885 0.046 251.8); /* #c4dcf7 */
--brand-300: oklch(0.808 0.082 251.8); /* #9ac4f4 */
--brand-400: oklch(0.712 0.122 251.8); /* #66a6ec */
--brand-500: oklch(0.637 0.147 251.8); /* #3e8ee1 */
--brand-600: oklch(0.577 0.144 251.8); /* #2c7ccb */
--brand-700: oklch(0.505 0.135 251.8); /* #1a66af */
--brand-800: oklch(0.444 0.12 251.8); /* #125593 */
--brand-900: oklch(0.396 0.109 251.8); /* #0d487e */
--brand-950: oklch(0.281 0.076 251.8); /* #052a4d */
}