#1b303f

Color #1b303f

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 10.4 Nearest Tailwind class cyan-950 #053345 · ΔE 4.3

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

Conversions

HEX

#1b303f

RGB

rgb(27, 48, 63)

HSL

hsl(205, 40%, 17.6%)

HSV / HSB

hsv(205, 57.1%, 24.7%)

CMYK

cmyk(57.1%, 23.8%, 0%, 75.3%)

LAB

lab(18.82, -3.3, -12.04)

LCH

lch(18.82, 12.48, 254.67)

OKLCH

oklch(29.9%, 0.0384, 240.83)

HWB

hwb(205, 10.6%, 75.3%)

Harmony colors

Complementary

#3f2a1b

Analogous

#1b3f3c

#1b303f

#1b1e3f

Triadic

#1b303f

#3f1b30

#303f1b

Split-complementary

#1b303f

#3f1b1e

#3f3c1b

Tetradic

#1b303f

#2a1b3f

#3f2a1b

#303f1b

Square

#1b303f

#3c1b3f

#3f2a1b

#1e3f1b

Shades

Color #1b303f mixed toward black.

#162834

#12202a

#0d181f

#091015

#04080a

Tints

Color #1b303f mixed toward white.

#305570

#457ba1

#6c9dc0

#9dbed5

#cedeea

Tones

Color #1b303f mixed toward gray.

#1e2f3c

#212f39

#242e36

#272e33

#2a2d30

Accessibility

Aa White text on this color

13.63:1

Aa Black text on this color

1.54:1

White text reads better on this background (13.63:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#26263c · ΔE 12

Deuteranopia

#24233b · ΔE 13.1

Tritanopia

#1c3938 · ΔE 11.3

Achromatopsia

#2e2e2e · ΔE 10.1

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

Code

CSS

background-color: #1b303f;

Tailwind (arbitrary value)

bg-[#1b303f]

Related colors

Charcoal #36454f

Light Sky Blue #87cefa

Steel Blue #4682b4

Alice Blue #f0f8ff

Dodger Blue #1e90ff

Light Slate Gray #778899

Frequently asked questions

#1b303f (#1b303f) is rgb(27, 48, 63) in RGB.

No, #1b303f 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 #1b303f, or check how it holds up for accessibility.

Generate a palette → Check contrast