#66a5fb

Color #66a5fb

A vivid, highly saturated light blue.

Closest named color Cornflower Blue #6495ed · ΔE 6.76 Nearest Tailwind class blue-400 #51a2ff · ΔE 2.2

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

Conversions

HEX

#66a5fb

RGB

rgb(102, 165, 251)

HSL

hsl(214.6, 94.9%, 69.2%)

HSV / HSB

hsv(214.6, 59.4%, 98.4%)

CMYK

cmyk(59.4%, 34.3%, 0%, 1.6%)

LAB

lab(67.05, 4.93, -48.87)

LCH

lch(67.05, 49.12, 275.76)

OKLCH

oklch(71.7%, 0.1422, 256.54)

HWB

hwb(214.6, 40%, 1.6%)

Harmony colors

Complementary

#fbbc66

Analogous

#66f0fb

#66a5fb

#7166fb

Triadic

#66a5fb

#fb66a5

#a5fb66

Split-complementary

#66a5fb

#fb7166

#f0fb66

Tetradic

#66a5fb

#bc66fb

#fbbc66

#a5fb66

Square

#66a5fb

#fb66f0

#fbbc66

#66fb71

Shades

Color #66a5fb mixed toward black.

#2d83f9

#0665e5

#044bac

#033273

#011939

Tints

Color #66a5fb mixed toward white.

#7fb4fc

#99c3fc

#b2d2fd

#cce1fe

#e5f0fe

Tones

Color #66a5fb mixed toward gray.

#72a7ef

#7fa9e2

#8babd6

#98adc9

#a4afbd

Accessibility

Aa White text on this color

2.52:1

Aa Black text on this color

8.34:1

Black text reads better on this background (8.34:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#8687ea · ΔE 13.8

Deuteranopia

#827de6 · ΔE 16.2

Tritanopia

#6adbd8 · ΔE 29

Achromatopsia

#a3a3a3 · ΔE 23.4

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

Code

CSS

background-color: #66a5fb;

Tailwind (arbitrary value)

bg-[#66a5fb]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#66a5fb (#66a5fb) is rgb(102, 165, 251) in RGB.

No, #66a5fb is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #66a5fb, or check how it holds up for accessibility.

Generate a palette → Check contrast