#00309a

Color #00309a

A vivid, highly saturated dark blue.

Closest named color Midnight Blue #191970 · ΔE 14.55 Nearest Tailwind class blue-900 #1c398e · ΔE 3.6

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Conversions

HEX

#00309a

RGB

rgb(0, 48, 154)

HSL

hsl(221.3, 100%, 30.2%)

HSV / HSB

hsv(221.3, 100%, 60.4%)

CMYK

cmyk(100%, 68.8%, 0%, 39.6%)

LAB

lab(25.09, 31.32, -60.81)

LCH

lch(25.09, 68.4, 297.25)

OKLCH

oklch(36.6%, 0.178, 262.61)

HWB

hwb(221.3, 0%, 39.6%)

Harmony colors

Complementary

#9a6a00

Analogous

#007d9a

#00309a

#1d009a

Triadic

#00309a

#9a0030

#309a00

Split-complementary

#00309a

#9a1d00

#7d9a00

Tetradic

#00309a

#6a009a

#9a6a00

#309a00

Square

#00309a

#9a007d

#9a6a00

#009a1d

Shades

Color #00309a mixed toward black.

#002880

#002067

#00184d

#001033

#00081a

Tints

Color #00309a mixed toward white.

#0042d5

#125cff

#4d84ff

#88adff

#c4d6ff

Tones

Color #00309a mixed toward gray.

#0d358d

#1a3a80

#273f74

#334367

#40485a

Accessibility

Aa White text on this color

11.11:1

Aa Black text on this color

1.89:1

White text reads better on this background (11.11:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1e1e89 · ΔE 5.8

Deuteranopia

#1b1885 · ΔE 7.2

Tritanopia

#057a77 · ΔE 37.5

Achromatopsia

#3c3c3c · ΔE 27

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

Code

CSS

background-color: #00309a;

Tailwind (arbitrary value)

bg-[#00309a]

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

#00309a (#00309a) is rgb(0, 48, 154) in RGB.

No, #00309a 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 #00309a, or check how it holds up for accessibility.

Generate a palette → Check contrast