Tailwind Blue 600

RGB: rgb(37 99 235)
HSL: hsl(221 83% 53%)
HWB: hwb(221 15% 8%)
Color family: Blue
Recommended foreground: #FFFFFF

Calculated profile

What the numbers say

At 221° hue, Tailwind Blue 600 is a high-saturation, mid-lightness, cool-hue sRGB color. Its relative luminance is 15.32%. For text on this background, #FFFFFF produces the stronger contrast at 5.17:1.

HSL lightness: 53%
HSL saturation: 83%
Relative luminance: 15.32%
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 text5.17:1

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

Black text4.06:1

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

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-blue-600: #2563EB;
--color-tailwind-blue-600-rgb: 37 99 235;
--color-tailwind-blue-600-hsl: 221 83% 53%;
color: #FFFFFF;
background-color: var(--color-tailwind-blue-600);

Community review

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Correction for Tailwind Blue 600#2563EB

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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