#283d5f

Color #283d5f

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 16.27 Nearest Tailwind class slate-700 #314158 · ΔE 3.9

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Conversions

HEX

#283d5f

RGB

rgb(40, 61, 95)

HSL

hsl(217.1, 40.7%, 26.5%)

HSV / HSB

hsv(217.1, 57.9%, 37.3%)

CMYK

cmyk(57.9%, 35.8%, 0%, 62.7%)

LAB

lab(25.61, 2.99, -22.73)

LCH

lch(25.61, 22.93, 277.49)

OKLCH

oklch(35.9%, 0.0652, 259.66)

HWB

hwb(217.1, 15.7%, 62.7%)

Harmony colors

Complementary

#5f4a28

Analogous

#28595f

#283d5f

#2f285f

Triadic

#283d5f

#5f283d

#3d5f28

Split-complementary

#283d5f

#5f2f28

#595f28

Tetradic

#283d5f

#4a285f

#5f4a28

#3d5f28

Square

#283d5f

#5f2859

#5f4a28

#285f2f

Shades

Color #283d5f mixed toward black.

#21334f

#1b293f

#141f30

#0d1420

#070a10

Tints

Color #283d5f mixed toward white.

#3b598b

#4f76b5

#7b98c7

#a7bbda

#d3ddec

Tones

Color #283d5f mixed toward gray.

#2d3e5a

#313f56

#364051

#3a414d

#3f4248

Accessibility

Aa White text on this color

10.92:1

Aa Black text on this color

1.92:1

White text reads better on this background (10.92:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#323258 · ΔE 7.4

Deuteranopia

#312f56 · ΔE 8.3

Tritanopia

#295251 · ΔE 20.4

Achromatopsia

#3d3d3d · ΔE 15.2

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

Code

CSS

background-color: #283d5f;

Tailwind (arbitrary value)

bg-[#283d5f]

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

#283d5f (#283d5f) is rgb(40, 61, 95) in RGB.

No, #283d5f 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 #283d5f, or check how it holds up for accessibility.

Generate a palette → Check contrast