#66645a

Color #66645a

A nearly neutral, gray-leaning dark yellow.

Closest named color Dim Gray #696969 · ΔE 6.43 Nearest Tailwind class olive-600 #5b5b4b · ΔE 4.9

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Conversions

HEX

#66645a

RGB

rgb(102, 100, 90)

HSL

hsl(50, 6.3%, 37.6%)

HSV / HSB

hsv(50, 11.8%, 40%)

CMYK

cmyk(0%, 2%, 11.8%, 60%)

LAB

lab(42.27, -1.17, 5.95)

LCH

lch(42.27, 6.06, 101.12)

OKLCH

oklch(50.2%, 0.0156, 97.72)

HWB

hwb(50, 35.3%, 60%)

Harmony colors

Complementary

#5a5c66

Analogous

#665e5a

#66645a

#62665a

Triadic

#66645a

#5a6664

#645a66

Split-complementary

#66645a

#5a6266

#5e5a66

Tetradic

#66645a

#5c665a

#5a5c66

#645a66

Square

#66645a

#5a665e

#5a5c66

#665a62

Shades

Color #66645a mixed toward black.

#55534b

#44433c

#33322d

#22211e

#11110f

Tints

Color #66645a mixed toward white.

#828073

#9c998e

#b4b3aa

#cdccc7

#e6e6e3

Tones

Color #66645a mixed toward gray.

#65635b

#64635c

#63625d

#62615e

#61615f

Accessibility

Aa White text on this color

5.94:1

Aa Black text on this color

3.54:1

White text reads better on this background (5.94:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#65655d · ΔE 1.4

Deuteranopia

#65655d · ΔE 1.4

Tritanopia

#665e5f · ΔE 8.4

Achromatopsia

#646464 · ΔE 5.4

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

Code

CSS

background-color: #66645a;

Tailwind (arbitrary value)

bg-[#66645a]

Related colors

Gold #ffd700

Cornsilk #fff8dc

Khaki #f0e68c

Lemon Chiffon #fffacd

Pale Goldenrod #eee8aa

Dark Khaki #bdb76b

Frequently asked questions

#66645a (#66645a) is rgb(102, 100, 90) in RGB.

No, #66645a 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 #66645a, or check how it holds up for accessibility.

Generate a palette → Check contrast