#555d87

Color #555d87

A muted medium blue.

Closest named color Steel Blue #4682b4 · ΔE 18.67 Nearest Tailwind class slate-600 #45556c · ΔE 8.1

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Conversions

HEX

#555d87

RGB

rgb(85, 93, 135)

HSL

hsl(230.4, 22.7%, 43.1%)

HSV / HSB

hsv(230.4, 37%, 52.9%)

CMYK

cmyk(37%, 31.1%, 0%, 47.1%)

LAB

lab(40.42, 7.85, -24.37)

LCH

lch(40.42, 25.6, 287.85)

OKLCH

oklch(48.9%, 0.0682, 275.3)

HWB

hwb(230.4, 33.3%, 47.1%)

Harmony colors

Complementary

#877f55

Analogous

#557687

#555d87

#665587

Triadic

#555d87

#87555d

#5d8755

Split-complementary

#555d87

#876655

#768755

Tetradic

#555d87

#7f5587

#877f55

#5d8755

Square

#555d87

#875576

#877f55

#558766

Shades

Color #555d87 mixed toward black.

#474d70

#393e5a

#2a2e43

#1c1f2d

#0e0f16

Tints

Color #555d87 mixed toward white.

#6b73a2

#888fb4

#a6abc7

#c4c7da

#e1e3ec

Tones

Color #555d87 mixed toward gray.

#596083

#5d637f

#61657a

#666876

#6a6b72

Accessibility

Aa White text on this color

6.36:1

Aa Black text on this color

3.3:1

White text reads better on this background (6.36:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#59597e · ΔE 3.3

Deuteranopia

#58577c · ΔE 3.9

Tritanopia

#557775 · ΔE 23.1

Achromatopsia

#5f5f5f · ΔE 16.8

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

Code

CSS

background-color: #555d87;

Tailwind (arbitrary value)

bg-[#555d87]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#555d87 (#555d87) is rgb(85, 93, 135) in RGB.

No, #555d87 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 #555d87, or check how it holds up for accessibility.

Generate a palette → Check contrast