#066b9b

Color #066b9b

A vivid, highly saturated dark cyan.

Closest named color Steel Blue #4682b4 · ΔE 10.38 Nearest Tailwind class sky-700 #0069a8 · ΔE 3.3

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

Conversions

HEX

#066b9b

RGB

rgb(6, 107, 155)

HSL

hsl(199.3, 92.5%, 31.6%)

HSV / HSB

hsv(199.3, 96.1%, 60.8%)

CMYK

cmyk(96.1%, 31%, 0%, 39.2%)

LAB

lab(42.64, -7.29, -33.11)

LCH

lch(42.64, 33.9, 257.58)

OKLCH

oklch(50.2%, 0.1102, 238.5)

HWB

hwb(199.3, 2.4%, 39.2%)

Harmony colors

Complementary

#9b3606

Analogous

#069b81

#066b9b

#06219b

Triadic

#066b9b

#9b066b

#6b9b06

Split-complementary

#066b9b

#9b0621

#9b8106

Tetradic

#066b9b

#36069b

#9b3606

#6b9b06

Square

#066b9b

#81069b

#9b3606

#219b06

Shades

Color #066b9b mixed toward black.

#055981

#044767

#03364e

#022434

#01121a

Tints

Color #066b9b mixed toward white.

#0892d3

#1fb1f6

#57c5f8

#8fd8fb

#c7ecfd

Tones

Color #066b9b mixed toward gray.

#12678f

#1f6282

#2b5e76

#385969

#44555d

Accessibility

Aa White text on this color

5.86:1

Aa Black text on this color

3.58:1

White text reads better on this background (5.86:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#484991 · ΔE 18.4

Deuteranopia

#433c8f · ΔE 21.4

Tritanopia

#188987 · ΔE 21.6

Achromatopsia

#656565 · ΔE 19.5

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

Code

CSS

background-color: #066b9b;

Tailwind (arbitrary value)

bg-[#066b9b]

Related colors

Sky Blue #87ceeb

Light Sky Blue #87cefa

Deep Sky Blue #00bfff

Light Blue #add8e6

Charcoal #36454f

Steel Blue #4682b4

Frequently asked questions

#066b9b (#066b9b) is rgb(6, 107, 155) in RGB.

No, #066b9b 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.

Try it → Generators

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 #066b9b, or check how it holds up for accessibility.

Generate a palette → Check contrast