#304b8f

Color #304b8f

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 13.26 Nearest Tailwind class blue-900 #1c398e · ΔE 5.8

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

Conversions

HEX

#304b8f

RGB

rgb(48, 75, 143)

HSL

hsl(222.9, 49.7%, 37.5%)

HSV / HSB

hsv(222.9, 66.4%, 56.1%)

CMYK

cmyk(66.4%, 47.6%, 0%, 43.9%)

LAB

lab(33.23, 13.07, -40.77)

LCH

lch(33.23, 42.81, 287.77)

OKLCH

oklch(42.9%, 0.117, 265.49)

HWB

hwb(222.9, 18.8%, 43.9%)

Harmony colors

Complementary

#8f7430

Analogous

#307b8f

#304b8f

#45308f

Triadic

#304b8f

#8f304b

#4b8f30

Split-complementary

#304b8f

#8f4530

#7b8f30

Tetradic

#304b8f

#74308f

#8f7430

#4b8f30

Square

#304b8f

#8f307b

#8f7430

#308f45

Shades

Color #304b8f mixed toward black.

#283f77

#20325f

#182648

#101930

#080d18

Tints

Color #304b8f mixed toward white.

#3d60b7

#607eca

#889ed7

#afbfe4

#d7dff2

Tones

Color #304b8f mixed toward gray.

#384f87

#40527f

#485577

#50596f

#585c68

Accessibility

Aa White text on this color

8.3:1

Aa Black text on this color

2.53:1

White text reads better on this background (8.3:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3d3e83 · ΔE 6.3

Deuteranopia

#3c3a7f · ΔE 7.5

Tritanopia

#327875 · ΔE 29.2

Achromatopsia

#4e4e4e · ΔE 22.1

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

Code

CSS

background-color: #304b8f;

Tailwind (arbitrary value)

bg-[#304b8f]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#304b8f (#304b8f) is rgb(48, 75, 143) in RGB.

No, #304b8f 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 #304b8f, or check how it holds up for accessibility.

Generate a palette → Check contrast