#666663

Color #666663

A nearly neutral, gray-leaning dark yellow.

Closest named color Dim Gray #696969 · ΔE 2.22 Nearest Tailwind class neutral-500 #737373 · ΔE 5.4

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

Conversions

HEX

#666663

RGB

rgb(102, 102, 99)

HSL

hsl(60, 1.5%, 39.4%)

HSV / HSB

hsv(60, 2.9%, 40%)

CMYK

cmyk(0%, 0%, 2.9%, 60%)

LAB

lab(43.11, -0.61, 1.69)

LCH

lch(43.11, 1.8, 109.85)

OKLCH

oklch(50.9%, 0.0047, 106.11)

HWB

hwb(60, 38.8%, 60%)

Harmony colors

Complementary

#636366

Analogous

#666463

#666663

#646663

Triadic

#666663

#636666

#666366

Split-complementary

#666663

#636466

#646366

Tetradic

#666663

#636663

#636366

#666366

Square

#666663

#636664

#636366

#666364

Shades

Color #666663 mixed toward black.

#555552

#444442

#333331

#222221

#111110

Tints

Color #666663 mixed toward white.

#80807c

#9a9a96

#b3b3b1

#cccccb

#e6e6e5

Tones

Color #666663 mixed toward gray.

#666663

#656563

#656564

Accessibility

Aa White text on this color

5.76:1

Aa Black text on this color

3.65:1

White text reads better on this background (5.76:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#666664 · ΔE 0.6

Deuteranopia

#666664 · ΔE 0.6

Tritanopia

#666464 · ΔE 2.5

Achromatopsia

#666666 · ΔE 1.8

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

Code

CSS

background-color: #666663;

Tailwind (arbitrary value)

bg-[#666663]

Related colors

Ivory #fffff0

Beige #f5f5dc

Light Goldenrod Yellow #fafad2

Light Yellow #ffffe0

Olive #808000

Yellow #ffff00

Frequently asked questions

#666663 (#666663) is rgb(102, 102, 99) in RGB.

No, #666663 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.

Try it → Generators

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 #666663, or check how it holds up for accessibility.

Generate a palette → Check contrast