#646b70

Color #646b70

A nearly neutral, gray-leaning medium blue.

Closest named color Dim Gray #696969 · ΔE 4.05 Nearest Tailwind class neutral-500 #737373 · ΔE 5.3

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Conversions

HEX

#646b70

RGB

rgb(100, 107, 112)

HSL

hsl(205, 5.7%, 41.6%)

HSV / HSB

hsv(205, 10.7%, 43.9%)

CMYK

cmyk(10.7%, 4.5%, 0%, 56.1%)

LAB

lab(44.79, -1.57, -3.71)

LCH

lch(44.79, 4.03, 247.06)

OKLCH

oklch(52.3%, 0.0117, 238.62)

HWB

hwb(205, 39.2%, 56.1%)

Harmony colors

Complementary

#706964

Analogous

#64706f

#646b70

#646570

Triadic

#646b70

#70646b

#6b7064

Split-complementary

#646b70

#706465

#706f64

Tetradic

#646b70

#696470

#706964

#6b7064

Square

#646b70

#6f6470

#706964

#657064

Shades

Color #646b70 mixed toward black.

#53595d

#43474b

#323638

#212425

#111213

Tints

Color #646b70 mixed toward white.

#7c848a

#969da1

#b0b5b9

#cbced0

#e5e6e8

Tones

Color #646b70 mixed toward gray.

#656b6f

#666b6e

#676b6d

#686a6c

#696a6b

Accessibility

Aa White text on this color

5.41:1

Aa Black text on this color

3.88:1

White text reads better on this background (5.41:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#67676f · ΔE 4.8

Deuteranopia

#67666f · ΔE 5.7

Tritanopia

#646e6e · ΔE 3.8

Achromatopsia

#6a6a6a · ΔE 4

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

Code

CSS

background-color: #646b70;

Tailwind (arbitrary value)

bg-[#646b70]

Related colors

Charcoal #36454f

Light Sky Blue #87cefa

Steel Blue #4682b4

Alice Blue #f0f8ff

Dodger Blue #1e90ff

Light Slate Gray #778899

Frequently asked questions

#646b70 (#646b70) is rgb(100, 107, 112) in RGB.

No, #646b70 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 #646b70, or check how it holds up for accessibility.

Generate a palette → Check contrast