#288CD9 — Blue
#288CD9 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.
#288CD9
Tints and shades (50–950)
Accessibility
Contrast on white
3.59:1
Contrast on black
5.84:1
- 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 0.011 247); /* #f0f6fc */
--brand-100: oklch(0.936 0.023 247); /* #deecf9 */
--brand-200: oklch(0.885 0.048 247); /* #c1ddf8 */
--brand-300: oklch(0.808 0.086 247); /* #93c6f5 */
--brand-400: oklch(0.712 0.127 247); /* #5aa8ed */
--brand-500: oklch(0.637 0.153 247); /* #2491e2 */
--brand-600: oklch(0.577 0.15 247); /* #047ecc */
--brand-700: oklch(0.505 0.133 247); /* #0069ab */
--brand-800: oklch(0.444 0.117 247); /* #005790 */
--brand-900: oklch(0.396 0.104 247); /* #00497b */
--brand-950: oklch(0.281 0.074 247); /* #002b4b */
}