#636f84

Color #636f84

A nearly neutral, gray-leaning medium blue.

Closest named color Slate Gray #708090 · ΔE 7.25 Nearest Tailwind class gray-500 #6a7282 · ΔE 2.5

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Conversions

HEX

#636f84

RGB

rgb(99, 111, 132)

HSL

hsl(218.2, 14.3%, 45.3%)

HSV / HSB

hsv(218.2, 25%, 51.8%)

CMYK

cmyk(25%, 15.9%, 0%, 48.2%)

LAB

lab(46.56, 0.5, -13.05)

LCH

lch(46.56, 13.06, 272.19)

OKLCH

oklch(53.9%, 0.0361, 261.71)

HWB

hwb(218.2, 38.8%, 48.2%)

Harmony colors

Complementary

#847863

Analogous

#638084

#636f84

#686384

Triadic

#636f84

#84636f

#6f8463

Split-complementary

#636f84

#846863

#808463

Tetradic

#636f84

#786384

#847863

#6f8463

Square

#636f84

#846380

#847863

#638468

Shades

Color #636f84 mixed toward black.

#525c6e

#424a58

#313742

#21252c

#101216

Tints

Color #636f84 mixed toward white.

#7a869b

#959eaf

#afb7c3

#cacfd7

#e4e7eb

Tones

Color #636f84 mixed toward gray.

#667081

#69717f

#6b717c

#6e7279

#717376

Accessibility

Aa White text on this color

5.08:1

Aa Black text on this color

4.14:1

White text reads better on this background (5.08:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#68697f · ΔE 5.6

Deuteranopia

#68677e · ΔE 6.8

Tritanopia

#647b7b · ΔE 13.1

Achromatopsia

#6e6e6e · ΔE 10.1

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

Code

CSS

background-color: #636f84;

Tailwind (arbitrary value)

bg-[#636f84]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Royal Blue #4169e1

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#636f84 (#636f84) is rgb(99, 111, 132) in RGB.

No, #636f84 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 #636f84, or check how it holds up for accessibility.

Generate a palette → Check contrast