#00309d

Color #00309d

A vivid, highly saturated dark blue.

Closest named color Midnight Blue #191970 · ΔE 15.79 Nearest Tailwind class blue-900 #1c398e · ΔE 3.8

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Conversions

HEX

#00309d

RGB

rgb(0, 48, 157)

HSL

hsl(221.7, 100%, 30.8%)

HSV / HSB

hsv(221.7, 100%, 61.6%)

CMYK

cmyk(100%, 69.4%, 0%, 38.4%)

LAB

lab(25.4, 32.51, -62.13)

LCH

lch(25.4, 70.12, 297.62)

OKLCH

oklch(36.9%, 0.1817, 262.76)

HWB

hwb(221.7, 0%, 38.4%)

Harmony colors

Complementary

#9d6d00

Analogous

#007e9d

#00309d

#1f009d

Triadic

#00309d

#9d0030

#309d00

Split-complementary

#00309d

#9d1f00

#7e9d00

Tetradic

#00309d

#6d009d

#9d6d00

#309d00

Square

#00309d

#9d007e

#9d6d00

#009d1f

Shades

Color #00309d mixed toward black.

#002883

#002069

#00184f

#001034

#00081a

Tints

Color #00309d mixed toward white.

#0042d8

#145bff

#4f84ff

#89adff

#c4d6ff

Tones

Color #00309d mixed toward gray.

#0d3590

#1a3a83

#273f76

#344469

#41495c

Accessibility

Aa White text on this color

11:1

Aa Black text on this color

1.91:1

White text reads better on this background (11:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1e1e8c · ΔE 5.7

Deuteranopia

#1b1888 · ΔE 7

Tritanopia

#057d79 · ΔE 38.5

Achromatopsia

#3c3c3c · ΔE 27.3

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

Code

CSS

background-color: #00309d;

Tailwind (arbitrary value)

bg-[#00309d]

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

#00309d (#00309d) is rgb(0, 48, 157) in RGB.

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

Generate a palette → Check contrast