#515b6d

Color #515b6d

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 11.33 Nearest Tailwind class gray-600 #4a5565 · ΔE 2.6

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

Conversions

HEX

#515b6d

RGB

rgb(81, 91, 109)

HSL

hsl(218.6, 14.7%, 37.3%)

HSV / HSB

hsv(218.6, 25.7%, 42.7%)

CMYK

cmyk(25.7%, 16.5%, 0%, 57.3%)

LAB

lab(38.44, 0.56, -11.55)

LCH

lch(38.44, 11.56, 272.78)

OKLCH

oklch(46.9%, 0.0319, 262.25)

HWB

hwb(218.6, 31.8%, 57.3%)

Harmony colors

Complementary

#6d6351

Analogous

#51696d

#515b6d

#55516d

Triadic

#515b6d

#6d515b

#5b6d51

Split-complementary

#515b6d

#6d5551

#696d51

Tetradic

#515b6d

#63516d

#6d6351

#5b6d51

Square

#515b6d

#6d5169

#6d6351

#516d55

Shades

Color #515b6d mixed toward black.

#444c5b

#363d49

#292e37

#1b1e24

#0e0f12

Tints

Color #515b6d mixed toward white.

#68758c

#8590a4

#a3acbb

#c2c7d2

#e0e3e8

Tones

Color #515b6d mixed toward gray.

#535c6b

#565c68

#585d66

#5a5e64

#5d5e61

Accessibility

Aa White text on this color

6.85:1

Aa Black text on this color

3.07:1

White text reads better on this background (6.85:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#565669 · ΔE 5.3

Deuteranopia

#555468 · ΔE 6.1

Tritanopia

#526665 · ΔE 12.6

Achromatopsia

#5a5a5a · ΔE 9.2

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

Code

CSS

background-color: #515b6d;

Tailwind (arbitrary value)

bg-[#515b6d]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#515b6d (#515b6d) is rgb(81, 91, 109) in RGB.

No, #515b6d 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 #515b6d, or check how it holds up for accessibility.

Generate a palette → Check contrast