#285d99

Color #285d99

A moderately saturated dark blue.

Closest named color Steel Blue #4682b4 · ΔE 16.68 Nearest Tailwind class sky-800 #00598a · ΔE 4.6

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Conversions

HEX

#285d99

RGB

rgb(40, 93, 153)

HSL

hsl(211.9, 58.5%, 37.8%)

HSV / HSB

hsv(211.9, 73.9%, 60%)

CMYK

cmyk(73.9%, 39.2%, 0%, 40%)

LAB

lab(38.86, 3.72, -37.85)

LCH

lch(38.86, 38.03, 275.61)

OKLCH

oklch(47.3%, 0.1125, 253.63)

HWB

hwb(211.9, 15.7%, 40%)

Harmony colors

Complementary

#996428

Analogous

#289599

#285d99

#2c2899

Triadic

#285d99

#99285d

#5d9928

Split-complementary

#285d99

#992c28

#959928

Tetradic

#285d99

#642899

#996428

#5d9928

Square

#285d99

#992895

#996428

#28992c

Shades

Color #285d99 mixed toward black.

#214d7f

#1b3e66

#142e4c

#0d1f33

#070f19

Tints

Color #285d99 mixed toward white.

#3376c3

#5791d3

#81adde

#abc8e9

#d5e4f4

Tones

Color #285d99 mixed toward gray.

#315d8f

#3b5e86

#445f7d

#4e5f73

#57606a

Accessibility

Aa White text on this color

6.74:1

Aa Black text on this color

3.12:1

White text reads better on this background (6.74:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#45458d · ΔE 12.1

Deuteranopia

#423e8a · ΔE 13.9

Tritanopia

#2c8381 · ΔE 26.2

Achromatopsia

#5b5b5b · ΔE 20.5

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

Code

CSS

background-color: #285d99;

Tailwind (arbitrary value)

bg-[#285d99]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Light Steel Blue #b0c4de

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Frequently asked questions

#285d99 (#285d99) is rgb(40, 93, 153) in RGB.

No, #285d99 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 #285d99, or check how it holds up for accessibility.

Generate a palette → Check contrast