#3663CB — Deep Blue
#3663CB is a deep 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.
#3663CB
Tints and shades (50–950)
Accessibility
Contrast on white
5.52:1
Contrast on black
3.80:1
- AA (4.5:1) on whitePass
- AA Large (3:1) on whitePass
- AAA (7:1) on whiteFail
- AAA Large (4.5:1) on whitePass
- 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 0.012 263.9); /* #f1f6fe */
--brand-100: oklch(0.936 0.027 263.9); /* #e1eafc */
--brand-200: oklch(0.885 0.055 263.9); /* #c7daff */
--brand-300: oklch(0.808 0.096 263.9); /* #a1c0ff */
--brand-400: oklch(0.712 0.148 263.9); /* #729ffe */
--brand-500: oklch(0.637 0.178 263.9); /* #5285f6 */
--brand-600: oklch(0.577 0.174 263.9); /* #4272df */
--brand-700: oklch(0.505 0.164 263.9); /* #325dc1 */
--brand-800: oklch(0.444 0.146 263.9); /* #284da3 */
--brand-900: oklch(0.396 0.132 263.9); /* #20418c */
--brand-950: oklch(0.281 0.092 263.9); /* #102556 */
}