#666b7b

Color #666b7b

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 8.51 Nearest Tailwind class gray-500 #6a7282 · ΔE 2.9

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

Conversions

HEX

#666b7b

RGB

rgb(102, 107, 123)

HSL

hsl(225.7, 9.3%, 44.1%)

HSV / HSB

hsv(225.7, 17.1%, 48.2%)

CMYK

cmyk(17.1%, 13%, 0%, 51.8%)

LAB

lab(45.32, 1.7, -9.52)

LCH

lch(45.32, 9.67, 280.12)

OKLCH

oklch(52.9%, 0.0258, 271.78)

HWB

hwb(225.7, 40%, 51.8%)

Harmony colors

Complementary

#7b7666

Analogous

#66757b

#666b7b

#6b667b

Triadic

#666b7b

#7b666b

#6b7b66

Split-complementary

#666b7b

#7b6b66

#757b66

Tetradic

#666b7b

#76667b

#7b7666

#6b7b66

Square

#666b7b

#7b6675

#7b7666

#667b6b

Shades

Color #666b7b mixed toward black.

#555966

#444752

#33353d

#222429

#111214

Tints

Color #666b7b mixed toward white.

#7d8293

#979ba9

#b1b4be

#cbcdd4

#e5e6e9

Tones

Color #666b7b mixed toward gray.

#686c79

#696d77

#6b6e76

#6d6f74

#6f7072

Accessibility

Aa White text on this color

5.31:1

Aa Black text on this color

3.95:1

White text reads better on this background (5.31:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#686877 · ΔE 2.6

Deuteranopia

#686876 · ΔE 2.6

Tritanopia

#667474 · ΔE 10.9

Achromatopsia

#6b6b6b · ΔE 8.1

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

Code

CSS

background-color: #666b7b;

Tailwind (arbitrary value)

bg-[#666b7b]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#666b7b (#666b7b) is rgb(102, 107, 123) in RGB.

No, #666b7b 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 #666b7b, or check how it holds up for accessibility.

Generate a palette → Check contrast