#646c87

Color #646c87

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 10.35 Nearest Tailwind class slate-500 #62748e · ΔE 5

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Conversions

HEX

#646c87

RGB

rgb(100, 108, 135)

HSL

hsl(226.3, 14.9%, 46.1%)

HSV / HSB

hsv(226.3, 25.9%, 52.9%)

CMYK

cmyk(25.9%, 20%, 0%, 47.1%)

LAB

lab(45.88, 3.4, -15.87)

LCH

lch(45.88, 16.23, 282.09)

OKLCH

oklch(53.5%, 0.0435, 271.97)

HWB

hwb(226.3, 39.2%, 47.1%)

Harmony colors

Complementary

#877f64

Analogous

#647e87

#646c87

#6e6487

Triadic

#646c87

#87646c

#6c8764

Split-complementary

#646c87

#876e64

#7e8764

Tetradic

#646c87

#7f6487

#877f64

#6c8764

Square

#646c87

#87647e

#877f64

#64876e

Shades

Color #646c87 mixed toward black.

#535a71

#43485a

#323644

#21242d

#111217

Tints

Color #646c87 mixed toward white.

#7b839e

#969cb1

#b0b5c5

#cacdd8

#e5e6ec

Tones

Color #646c87 mixed toward gray.

#676e84

#6a6f81

#6d717e

#70727b

#737478

Accessibility

Aa White text on this color

5.2:1

Aa Black text on this color

4.04:1

White text reads better on this background (5.2:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#686881 · ΔE 3.6

Deuteranopia

#676680 · ΔE 4.3

Tritanopia

#647c7b · ΔE 17.1

Achromatopsia

#6d6d6d · ΔE 12.1

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

Code

CSS

background-color: #646c87;

Tailwind (arbitrary value)

bg-[#646c87]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#646c87 (#646c87) is rgb(100, 108, 135) in RGB.

No, #646c87 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.

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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 #646c87, or check how it holds up for accessibility.

Generate a palette → Check contrast