#1b428b

Color #1b428b

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 11.9 Nearest Tailwind class blue-900 #1c398e · ΔE 3.5

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

Conversions

HEX

#1b428b

RGB

rgb(27, 66, 139)

HSL

hsl(219.1, 67.5%, 32.5%)

HSV / HSB

hsv(219.1, 80.6%, 54.5%)

CMYK

cmyk(80.6%, 52.5%, 0%, 45.5%)

LAB

lab(29.39, 14.5, -44.54)

LCH

lch(29.39, 46.84, 288.03)

OKLCH

oklch(39.6%, 0.1296, 261.48)

HWB

hwb(219.1, 10.6%, 45.5%)

Harmony colors

Complementary

#8b641b

Analogous

#1b7a8b

#1b428b

#2c1b8b

Triadic

#1b428b

#8b1b42

#428b1b

Split-complementary

#1b428b

#8b2c1b

#7a8b1b

Tetradic

#1b428b

#641b8b

#8b641b

#428b1b

Square

#1b428b

#8b1b7a

#8b641b

#1b8b2c

Shades

Color #1b428b mixed toward black.

#163774

#122c5d

#0d2145

#09162e

#040b17

Tints

Color #1b428b mixed toward white.

#2459bb

#3f75da

#6f97e3

#9fbaec

#cfdcf6

Tones

Color #1b428b mixed toward gray.

#244581

#2e4878

#374a6f

#404d66

#4a505c

Accessibility

Aa White text on this color

9.55:1

Aa Black text on this color

2.2:1

White text reads better on this background (9.55:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#30317e · ΔE 7.6

Deuteranopia

#2e2b7b · ΔE 9.2

Tritanopia

#1e7370 · ΔE 30.6

Achromatopsia

#454545 · ΔE 23

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

Code

CSS

background-color: #1b428b;

Tailwind (arbitrary value)

bg-[#1b428b]

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

#1b428b (#1b428b) is rgb(27, 66, 139) in RGB.

No, #1b428b 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 #1b428b, or check how it holds up for accessibility.

Generate a palette → Check contrast