#6366F1 — Tints, Shades & Color Values

#6366F1

#6366F1 is a light, vivid blue. In Tailwind CSS this exact color is the utility class indigo-500 (e.g. bg-indigo-500, text-indigo-500). Its nearest CSS named color is mediumslateblue (#7b68ee). For readable text on a #6366F1 background, black text gives the strongest contrast (4.70:1). #6366F1 sits in the middle of the lightness range, so it can serve as a primary brand or accent color — use its tints for backgrounds and its shades for text and pressed states.

Want to fine-tune this color interactively? Open #6366F1 in the tint & shade generator to explore the full lightness, hue, and chroma scales and copy any step.

Color Values

Hex#6366F1
RGBrgb(99, 102, 241)
HSLhsl(239, 84%, 67%)
HSV / HSB239°, 59%, 95%
Nearest namedmediumslateblue (#7b68ee)

Need these in another format? Use our hex to RGB converter for quick two-way conversion.

#6366F1 in Tailwind CSS (indigo-500)

#6366F1 ships with Tailwind CSS as indigo-500 — use it as bg-indigo-500, text-indigo-500, or border-indigo-500. It sits at step 500 of the indigo ramp; every other step links to its own page:

Browse the full Tailwind palette in the color library, or generate in-between steps with the tint & shade generator.

Tints of #6366F1 (Mixed with White)

Each step blends the base color toward white using new = old + (255 − old) × factor. Click a swatch to open it in the generator.

Shades of #6366F1 (Mixed with Black)

Each step blends the base color toward black using new = old × (1 − factor).

WCAG Contrast & Accessibility

Contrast ratios for text placed on a #6366F1 background. WCAG requires 4.5:1 for normal text (AA), 3:1 for large text (AA), and 7:1 for normal text (AAA).

Text color White text 4.47:1 — AA normal: Fail · AA large: Pass · AAA: Fail
Black text 4.70:1 — AA normal: Pass · AA large: Pass · AAA: Fail

If neither pure white nor pure black reaches the level you need, pick a darker shade of #6366F1 from the ramps above as the background instead — small lightness moves change contrast quickly. Test any other pair with the free contrast checker.

More blue colors in the library: #60A5FA (blue-400), #94A3B8 (slate-400), #9CA3AF (gray-400), #3B82F6 (blue-500), #6A5ACD, #1E90FF.

Frequently Asked Questions

Browse more colors in the color library, or start from any hex code on the HexTints homepage.

Building a brand around #6366F1? Put it on a free link-in-bio page →