#51665b

Color #51665b

A nearly neutral, gray-leaning dark green.

Closest named color Dim Gray #696969 · ΔE 11.44 Nearest Tailwind class olive-600 #5b5b4b · ΔE 9.5

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Conversions

HEX

#51665b

RGB

rgb(81, 102, 91)

HSL

hsl(148.6, 11.5%, 35.9%)

HSV / HSB

hsv(148.6, 20.6%, 40%)

CMYK

cmyk(20.6%, 0%, 10.8%, 60%)

LAB

lab(41.23, -10.37, 3.63)

LCH

lch(41.23, 10.99, 160.71)

OKLCH

oklch(48.9%, 0.0308, 162.21)

HWB

hwb(148.6, 31.8%, 60%)

Harmony colors

Complementary

#66515c

Analogous

#526651

#51665b

#516666

Triadic

#51665b

#5b5166

#665b51

Split-complementary

#51665b

#665166

#665152

Tetradic

#51665b

#515c66

#66515c

#665b51

Square

#51665b

#515266

#66515c

#666651

Shades

Color #51665b mixed toward black.

#44554c

#36443d

#29332e

#1b221e

#0e110f

Tints

Color #51665b mixed toward white.

#698476

#859f91

#a4b7ad

#c2cfc8

#e1e7e4

Tones

Color #51665b mixed toward gray.

#53645b

#55635b

#56615b

#585f5b

#5a5d5b

Accessibility

Aa White text on this color

6.17:1

Aa Black text on this color

3.4:1

White text reads better on this background (6.17:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#5b5b5e · ΔE 13.3

Deuteranopia

#5a585e · ΔE 15.6

Tritanopia

#526060 · ΔE 6.8

Achromatopsia

#616161 · ΔE 11.7

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

Code

CSS

background-color: #51665b;

Tailwind (arbitrary value)

bg-[#51665b]

Related colors

Spring Green #00ff7f

Mint Cream #f5fffa

Medium Sea Green #3cb371

Sea Green #2e8b57

Medium Spring Green #00fa9a

Medium Aquamarine #66cdaa

Frequently asked questions

#51665b (#51665b) is rgb(81, 102, 91) in RGB.

No, #51665b 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 #51665b, or check how it holds up for accessibility.

Generate a palette → Check contrast