#3f6f87

Color #3f6f87

A muted dark blue.

Closest named color Slate Gray #708090 · ΔE 13.31 Nearest Tailwind class cyan-700 #007595 · ΔE 5

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Conversions

HEX

#3f6f87

RGB

rgb(63, 111, 135)

HSL

hsl(200, 36.4%, 38.8%)

HSV / HSB

hsv(200, 53.3%, 52.9%)

CMYK

cmyk(53.3%, 17.8%, 0%, 47.1%)

LAB

lab(44.48, -9.13, -18.21)

LCH

lch(44.48, 20.37, 243.37)

OKLCH

oklch(51.8%, 0.0646, 231.6)

HWB

hwb(200, 24.7%, 47.1%)

Harmony colors

Complementary

#87573f

Analogous

#3f877b

#3f6f87

#3f4b87

Triadic

#3f6f87

#873f6f

#6f873f

Split-complementary

#3f6f87

#873f4b

#877b3f

Tetradic

#3f6f87

#573f87

#87573f

#6f873f

Square

#3f6f87

#7b3f87

#87573f

#4b873f

Shades

Color #3f6f87 mixed toward black.

#345c70

#2a4a5a

#1f3743

#15252d

#0a1216

Tints

Color #3f6f87 mixed toward white.

#4f8caa

#71a4bd

#95bacd

#b8d1de

#dce8ee

Tones

Color #3f6f87 mixed toward gray.

#456d81

#4b6b7b

#516975

#57676f

#5d6569

Accessibility

Aa White text on this color

5.48:1

Aa Black text on this color

3.83:1

White text reads better on this background (5.48:1). That passes WCAG AA (≥4.5:1) for normal-size text, but not AAA.

Under color vision deficiencies

Protanopia

#585882 · ΔE 17.8

Deuteranopia

#555180 · ΔE 19

Tritanopia

#427d7c · ΔE 13

Achromatopsia

#696969 · ΔE 15

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

Code

CSS

background-color: #3f6f87;

Tailwind (arbitrary value)

bg-[#3f6f87]

Related colors

Sky Blue #87ceeb

Light Sky Blue #87cefa

Charcoal #36454f

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#3f6f87 (#3f6f87) is rgb(63, 111, 135) in RGB.

No, #3f6f87 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 #3f6f87, or check how it holds up for accessibility.

Generate a palette → Check contrast