#1b4189

Color #1b4189

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 11.98 Nearest Tailwind class blue-900 #1c398e · ΔE 3.3

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

Conversions

HEX

#1b4189

RGB

rgb(27, 65, 137)

HSL

hsl(219.3, 67.1%, 32.2%)

HSV / HSB

hsv(219.3, 80.3%, 53.7%)

CMYK

cmyk(80.3%, 52.6%, 0%, 46.3%)

LAB

lab(28.95, 14.38, -44.02)

LCH

lch(28.95, 46.31, 288.09)

OKLCH

oklch(39.2%, 0.1281, 261.6)

HWB

hwb(219.3, 10.6%, 46.3%)

Harmony colors

Complementary

#89631b

Analogous

#1b7889

#1b4189

#2c1b89

Triadic

#1b4189

#891b41

#41891b

Split-complementary

#1b4189

#892c1b

#78891b

Tetradic

#1b4189

#631b89

#89631b

#41891b

Square

#1b4189

#891b78

#89631b

#1b892c

Shades

Color #1b4189 mixed toward black.

#173672

#122b5b

#0e2145

#09162e

#050b17

Tints

Color #1b4189 mixed toward white.

#2458b9

#3e74d9

#6f97e3

#9fb9ec

#cfdcf6

Tones

Color #1b4189 mixed toward gray.

#244480

#2d4777

#374a6e

#404c64

#494f5b

Accessibility

Aa White text on this color

9.7:1

Aa Black text on this color

2.16:1

White text reads better on this background (9.7:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#30307c · ΔE 7.7

Deuteranopia

#2d2a79 · ΔE 9.1

Tritanopia

#1e716e · ΔE 30.4

Achromatopsia

#444444 · ΔE 22.9

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

Code

CSS

background-color: #1b4189;

Tailwind (arbitrary value)

bg-[#1b4189]

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

#1b4189 (#1b4189) is rgb(27, 65, 137) in RGB.

No, #1b4189 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 #1b4189, or check how it holds up for accessibility.

Generate a palette → Check contrast