Tailwind Indigo 400

RGB: rgb(129 140 248)
HSL: hsl(234 89% 74%)
HWB: hwb(234 51% 3%)
Color family: Indigo
Recommended foreground: #000000

Calculated profile

What the numbers say

At 234° hue, Tailwind Indigo 400 is a high-saturation, light, cool-hue sRGB color. Its relative luminance is 30.20%. For text on this background, #000000 produces the stronger contrast at 7.04:1.

HSL lightness: 74%
HSL saturation: 89%
Relative luminance: 30.20%
Hue group: cool-hue

Copy-ready color formats

Equivalent sRGB notations calculated from the same six-digit HEX value.

Text contrast against this color

Ratios use WCAG relative luminance. Passing a ratio does not by itself certify an interface.

White text2.98:1

AA normal text: Fail
AA large text: Fail
AAA normal text: Fail
AAA large text: Fail

Black text7.04:1

AA normal text: Pass
AA large text: Pass
AAA normal text: Pass
AAA large text: Pass

Calculated tints and shades

Tints mix the color with white; shades mix it with black in sRGB.

Tints

Shades

Hue-wheel relationships

These colors keep the original HSL saturation and lightness while rotating hue. They are mathematical starting points, not automatic design recommendations.

Opacity variants

Eight-digit HEX and modern rgb() alpha syntax for the same opacity.

20%

40%

60%

80%

CSS starter

A small custom-property block using the calculated foreground with the stronger black-or-white contrast.

--color-tailwind-indigo-400: #818CF8;
--color-tailwind-indigo-400-rgb: 129 140 248;
--color-tailwind-indigo-400-hsl: 234 89% 74%;
color: #000000;
background-color: var(--color-tailwind-indigo-400);

Community review

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Correction for Tailwind Indigo 400#818CF8

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08 / Verification

Where the values come from

The color name and HEX value are checked against the cited standard. RGB, HSL, HWB, luminance, and contrast are then calculated from that HEX value using published formulas.

Source for the name and HEX: Tailwind CSS default color palette