#6366F1 — Tints, Shades & Color Values
#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.
Color Values
| Hex | #6366F1 |
|---|---|
| RGB | rgb(99, 102, 241) |
| HSL | hsl(239, 84%, 67%) |
| HSV / HSB | 239°, 59%, 95% |
| Nearest named | mediumslateblue (#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.
-
10% tint
#7375f2 -
20% tint
#8285f4 -
30% tint
#9294f5 -
40% tint
#a1a3f7 -
50% tint
#b1b3f8 -
60% tint
#c1c2f9 -
70% tint
#d0d1fb -
80% tint
#e0e0fc -
90% tint
#eff0fe
Shades of #6366F1 (Mixed with Black)
Each step blends the base color toward black using new = old × (1 − factor).
-
10% shade
#595cd9 -
20% shade
#4f52c1 -
30% shade
#4547a9 -
40% shade
#3b3d91 -
50% shade
#323379 -
60% shade
#282960 -
70% shade
#1e1f48 -
80% shade
#141430 -
90% shade
#0a0a18
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
-
What color is #6366F1?
#6366F1 is a light, vivid blue —
rgb(99, 102, 241). Its nearest CSS named color ismediumslateblue. In Tailwind CSS it isindigo-500. -
How do I make tints and shades of #6366F1?
Mix #6366F1 with white for tints and with black for shades. A 20% tint of #6366F1 is
#8285f4and a 20% shade is#4f52c1— the full 10%–90% ramps are precomputed on this page, or open #6366F1 in the generator for finer steps. -
What text color is readable on #6366F1?
Black text gives the strongest contrast on a #6366F1 background at 4.70:1, which passes WCAG AA for normal text but not AAA.
-
What is the Tailwind CSS class for #6366F1?
indigo-500— use it asbg-indigo-500,text-indigo-500, orborder-indigo-500. The full indigo 50–950 ramp is linked above.
Browse more colors in the color library, or start from any hex code on the HexTints homepage.
#6366F1? Put it on a free link-in-bio page →