#284a9e

Color #284a9e

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 11.02 Nearest Tailwind class blue-900 #1c398e · ΔE 5.5

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

Conversions

HEX

#284a9e

RGB

rgb(40, 74, 158)

HSL

hsl(222.7, 59.6%, 38.8%)

HSV / HSB

hsv(222.7, 74.7%, 62%)

CMYK

cmyk(74.7%, 53.2%, 0%, 38%)

LAB

lab(33.6, 18.2, -49.3)

LCH

lch(33.6, 52.55, 290.26)

OKLCH

oklch(43.4%, 0.1425, 264.57)

HWB

hwb(222.7, 15.7%, 38%)

Harmony colors

Complementary

#9e7c28

Analogous

#28859e

#284a9e

#41289e

Triadic

#284a9e

#9e284a

#4a9e28

Split-complementary

#284a9e

#9e4128

#859e28

Tetradic

#284a9e

#7c289e

#9e7c28

#4a9e28

Square

#284a9e

#9e2885

#9e7c28

#289e41

Shades

Color #284a9e mixed toward black.

#213e84

#1b3169

#14254f

#0d1935

#070c1a

Tints

Color #284a9e mixed toward white.

#325dc7

#597dd5

#829ddf

#acbeea

#d5def4

Tones

Color #284a9e mixed toward gray.

#324e94

#3c528a

#455680

#4f5b77

#595f6d

Accessibility

Aa White text on this color

8.19:1

Aa Black text on this color

2.56:1

White text reads better on this background (8.19:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3a3a8f · ΔE 7

Deuteranopia

#38358b · ΔE 8.3

Tritanopia

#2a827f · ΔE 32.8

Achromatopsia

#4f4f4f · ΔE 24.2

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

Code

CSS

background-color: #284a9e;

Tailwind (arbitrary value)

bg-[#284a9e]

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

#284a9e (#284a9e) is rgb(40, 74, 158) in RGB.

No, #284a9e 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 #284a9e, or check how it holds up for accessibility.

Generate a palette → Check contrast