#1b4b9f

Color #1b4b9f

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.8 Nearest Tailwind class blue-900 #1c398e · ΔE 6.2

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

Conversions

HEX

#1b4b9f

RGB

rgb(27, 75, 159)

HSL

hsl(218.2, 71%, 36.5%)

HSV / HSB

hsv(218.2, 83%, 62.4%)

CMYK

cmyk(83%, 52.8%, 0%, 37.6%)

LAB

lab(33.49, 16.44, -50.1)

LCH

lch(33.49, 52.73, 288.17)

OKLCH

oklch(43.2%, 0.1463, 260.76)

HWB

hwb(218.2, 10.6%, 37.6%)

Harmony colors

Complementary

#9f6f1b

Analogous

#1b8d9f

#1b4b9f

#2d1b9f

Triadic

#1b4b9f

#9f1b4b

#4b9f1b

Split-complementary

#1b4b9f

#9f2d1b

#8d9f1b

Tetradic

#1b4b9f

#6f1b9f

#9f6f1b

#4b9f1b

Square

#1b4b9f

#9f1b8d

#9f6f1b

#1b9f2d

Shades

Color #1b4b9f mixed toward black.

#163f85

#12326a

#0d2650

#091935

#040d1b

Tints

Color #1b4b9f mixed toward white.

#2361cd

#467ee0

#759ee8

#a3bfef

#d1dff7

Tones

Color #1b4b9f mixed toward gray.

#264e94

#315189

#3c547e

#475773

#525a68

Accessibility

Aa White text on this color

8.22:1

Aa Black text on this color

2.55:1

White text reads better on this background (8.22:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#363690 · ΔE 8.9

Deuteranopia

#332f8c · ΔE 10.7

Tritanopia

#1f8380 · ΔE 33

Achromatopsia

#4f4f4f · ΔE 24.2

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

Code

CSS

background-color: #1b4b9f;

Tailwind (arbitrary value)

bg-[#1b4b9f]

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

#1b4b9f (#1b4b9f) is rgb(27, 75, 159) in RGB.

No, #1b4b9f 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 #1b4b9f, or check how it holds up for accessibility.

Generate a palette → Check contrast