#1664ff

Color #1664ff

A vivid, highly saturated medium blue.

Closest named color Medium Slate Blue #7b68ee · ΔE 18.1 Nearest Tailwind class blue-600 #155dfc · ΔE 2.3

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1664ff

RGB

rgb(22, 100, 255)

HSL

hsl(219.9, 100%, 54.3%)

HSV / HSB

hsv(219.9, 91.4%, 100%)

CMYK

cmyk(91.4%, 60.8%, 0%, 0%)

LAB

lab(47.63, 37.02, -82.45)

LCH

lch(47.63, 90.38, 294.18)

OKLCH

oklch(56.2%, 0.2412, 262.19)

HWB

hwb(219.9, 8.6%, 0%)

Harmony colors

Complementary

#ffb116

Analogous

#16d9ff

#1664ff

#3c16ff

Triadic

#1664ff

#ff1664

#64ff16

Split-complementary

#1664ff

#ff3c16

#d9ff16

Tetradic

#1664ff

#b116ff

#ffb116

#64ff16

Square

#1664ff

#ff16d9

#ffb116

#16ff3c

Shades

Color #1664ff mixed toward black.

#004de7

#003eb9

#002e8a

#001f5c

#000f2e

Tints

Color #1664ff mixed toward white.

#3d7eff

#6498ff

#8ab2ff

#b1cbff

#d8e5ff

Tones

Color #1664ff mixed toward gray.

#296aec

#3d71d8

#5077c5

#647eb1

#77849e

Accessibility

Aa White text on this color

4.88:1

Aa Black text on this color

4.3:1

White text reads better on this background (4.88:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#4546e6 · ΔE 10.1

Deuteranopia

#413bdf · ΔE 12.9

Tritanopia

#1fcfc9 · ΔE 45

Achromatopsia

#717171 · ΔE 29.8

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #1664ff;

Tailwind (arbitrary value)

bg-[#1664ff]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#1664ff (#1664ff) is rgb(22, 100, 255) in RGB.

No, #1664ff is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #1664ff, or check how it holds up for accessibility.

Generate a palette → Check contrast