#304e8f

Color #304e8f

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.57 Nearest Tailwind class blue-900 #1c398e · ΔE 6.8

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

Conversions

HEX

#304e8f

RGB

rgb(48, 78, 143)

HSL

hsl(221.1, 49.7%, 37.5%)

HSV / HSB

hsv(221.1, 66.4%, 56.1%)

CMYK

cmyk(66.4%, 45.5%, 0%, 43.9%)

LAB

lab(34.11, 11.07, -39.37)

LCH

lch(34.11, 40.9, 285.7)

OKLCH

oklch(43.6%, 0.1131, 263.7)

HWB

hwb(221.1, 18.8%, 43.9%)

Harmony colors

Complementary

#8f7130

Analogous

#307e8f

#304e8f

#42308f

Triadic

#304e8f

#8f304e

#4e8f30

Split-complementary

#304e8f

#8f4230

#7e8f30

Tetradic

#304e8f

#71308f

#8f7130

#4e8f30

Square

#304e8f

#8f307e

#8f7130

#308f42

Shades

Color #304e8f mixed toward black.

#284177

#20345f

#182748

#101a30

#080d18

Tints

Color #304e8f mixed toward white.

#3d64b7

#6081ca

#88a1d7

#afc0e4

#d7e0f2

Tones

Color #304e8f mixed toward gray.

#385187

#40547f

#485777

#505a6f

#585d68

Accessibility

Aa White text on this color

8.04:1

Aa Black text on this color

2.61:1

White text reads better on this background (8.04:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3f3f83 · ΔE 7.3

Deuteranopia

#3d3b80 · ΔE 8.3

Tritanopia

#327876 · ΔE 28

Achromatopsia

#505050 · ΔE 21.6

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

Code

CSS

background-color: #304e8f;

Tailwind (arbitrary value)

bg-[#304e8f]

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

#304e8f (#304e8f) is rgb(48, 78, 143) in RGB.

No, #304e8f 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 #304e8f, or check how it holds up for accessibility.

Generate a palette → Check contrast