#51587c

Color #51587c

A muted medium blue.

Closest named color Charcoal #36454f · ΔE 19.16 Nearest Tailwind class slate-600 #45556c · ΔE 6.8

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Conversions

HEX

#51587c

RGB

rgb(81, 88, 124)

HSL

hsl(230.2, 21%, 40.2%)

HSV / HSB

hsv(230.2, 34.7%, 48.6%)

CMYK

cmyk(34.7%, 29%, 0%, 51.4%)

LAB

lab(38.17, 6.57, -21.19)

LCH

lch(38.17, 22.19, 287.23)

OKLCH

oklch(46.9%, 0.0591, 275.44)

HWB

hwb(230.2, 31.8%, 51.4%)

Harmony colors

Complementary

#7c7551

Analogous

#516e7c

#51587c

#5f517c

Triadic

#51587c

#7c5158

#587c51

Split-complementary

#51587c

#7c5f51

#6e7c51

Tetradic

#51587c

#75517c

#7c7551

#587c51

Square

#51587c

#7c516e

#7c7551

#517c5f

Shades

Color #51587c mixed toward black.

#434967

#363b53

#282c3e

#1b1d29

#0d0f15

Tints

Color #51587c mixed toward white.

#656e9b

#848baf

#a3a8c3

#c1c5d7

#e0e2eb

Tones

Color #51587c mixed toward gray.

#555a78

#585d75

#5c5f71

#5f626e

#63646a

Accessibility

Aa White text on this color

6.92:1

Aa Black text on this color

3.04:1

White text reads better on this background (6.92:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#545475 · ΔE 2.9

Deuteranopia

#545373 · ΔE 3.5

Tritanopia

#516e6d · ΔE 21.1

Achromatopsia

#5a5a5a · ΔE 15.3

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

Code

CSS

background-color: #51587c;

Tailwind (arbitrary value)

bg-[#51587c]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#51587c (#51587c) is rgb(81, 88, 124) in RGB.

No, #51587c 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.

Try it → Accessibility

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 #51587c, or check how it holds up for accessibility.

Generate a palette → Check contrast