#1b3644

Color #1b3644

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 8.51 Nearest Tailwind class cyan-950 #053345 · ΔE 2.8

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Conversions

HEX

#1b3644

RGB

rgb(27, 54, 68)

HSL

hsl(200.5, 43.2%, 18.6%)

HSV / HSB

hsv(200.5, 60.3%, 26.7%)

CMYK

cmyk(60.3%, 20.6%, 0%, 73.3%)

LAB

lab(21.16, -5.51, -11.84)

LCH

lch(21.16, 13.06, 245.04)

OKLCH

oklch(31.8%, 0.0414, 232.66)

HWB

hwb(200.5, 10.6%, 73.3%)

Harmony colors

Complementary

#44291b

Analogous

#1b443d

#1b3644

#1b2144

Triadic

#1b3644

#441b36

#36441b

Split-complementary

#1b3644

#441b21

#443d1b

Tetradic

#1b3644

#291b44

#44291b

#36441b

Square

#1b3644

#3d1b44

#44291b

#21441b

Shades

Color #1b3644 mixed toward black.

#162d39

#12242d

#0d1b22

#091217

#04090b

Tints

Color #1b3644 mixed toward white.

#2f5d75

#4285a7

#6aa5c4

#9cc3d8

#cde1eb

Tones

Color #1b3644 mixed toward gray.

#1e3541

#22343d

#25333a

#293236

#2c3133

Accessibility

Aa White text on this color

12.67:1

Aa Black text on this color

1.66:1

White text reads better on this background (12.67:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#292941 · ΔE 14.8

Deuteranopia

#272540 · ΔE 16.3

Tritanopia

#1d3e3e · ΔE 9.5

Achromatopsia

#333333 · ΔE 10.9

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

Code

CSS

background-color: #1b3644;

Tailwind (arbitrary value)

bg-[#1b3644]

Related colors

Light Sky Blue #87cefa

Sky Blue #87ceeb

Charcoal #36454f

Deep Sky Blue #00bfff

Light Blue #add8e6

Steel Blue #4682b4

Frequently asked questions

#1b3644 (#1b3644) is rgb(27, 54, 68) in RGB.

No, #1b3644 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 #1b3644, or check how it holds up for accessibility.

Generate a palette → Check contrast