#304e7f

Color #304e7f

A moderately saturated dark blue.

Closest named color Steel Blue #4682b4 · ΔE 21.44 Nearest Tailwind class slate-600 #45556c · ΔE 7.1

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

Conversions

HEX

#304e7f

RGB

rgb(48, 78, 127)

HSL

hsl(217.2, 45.1%, 34.3%)

HSV / HSB

hsv(217.2, 62.2%, 49.8%)

CMYK

cmyk(62.2%, 38.6%, 0%, 50.2%)

LAB

lab(33.15, 5.15, -31.05)

LCH

lch(33.15, 31.47, 279.42)

OKLCH

oklch(42.5%, 0.0894, 259.76)

HWB

hwb(217.2, 18.8%, 50.2%)

Harmony colors

Complementary

#7f6130

Analogous

#30757f

#304e7f

#39307f

Triadic

#304e7f

#7f304e

#4e7f30

Split-complementary

#304e7f

#7f3930

#757f30

Tetradic

#304e7f

#61307f

#7f6130

#4e7f30

Square

#304e7f

#7f3075

#7f6130

#307f39

Shades

Color #304e7f mixed toward black.

#28416a

#203455

#18273f

#101a2a

#080d15

Tints

Color #304e7f mixed toward white.

#3f67a7

#5d83c2

#85a2d1

#aec1e0

#d6e0f0

Tones

Color #304e7f mixed toward gray.

#375078

#3d5172

#44536b

#4a5465

#51565e

Accessibility

Aa White text on this color

8.33:1

Aa Black text on this color

2.52:1

White text reads better on this background (8.33:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3f3f75 · ΔE 8.2

Deuteranopia

#3d3b73 · ΔE 9.1

Tritanopia

#326d6b · ΔE 24.1

Achromatopsia

#4e4e4e · ΔE 18.6

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

Code

CSS

background-color: #304e7f;

Tailwind (arbitrary value)

bg-[#304e7f]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#304e7f (#304e7f) is rgb(48, 78, 127) in RGB.

No, #304e7f 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 #304e7f, or check how it holds up for accessibility.

Generate a palette → Check contrast