#1b4781

Color #1b4781

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 19.72 Nearest Tailwind class sky-900 #024a70 · ΔE 6

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Conversions

HEX

#1b4781

RGB

rgb(27, 71, 129)

HSL

hsl(214.1, 65.4%, 30.6%)

HSV / HSB

hsv(214.1, 79.1%, 50.6%)

CMYK

cmyk(79.1%, 45%, 0%, 49.4%)

LAB

lab(30.21, 7, -37.02)

LCH

lch(30.21, 37.68, 280.71)

OKLCH

oklch(40%, 0.109, 256.63)

HWB

hwb(214.1, 10.6%, 49.4%)

Harmony colors

Complementary

#81551b

Analogous

#1b7a81

#1b4781

#221b81

Triadic

#1b4781

#811b47

#47811b

Split-complementary

#1b4781

#81221b

#7a811b

Tetradic

#1b4781

#551b81

#81551b

#47811b

Square

#1b4781

#811b7a

#81551b

#1b8122

Shades

Color #1b4781 mixed toward black.

#163b6c

#122f56

#0d2441

#09182b

#040c16

Tints

Color #1b4781 mixed toward white.

#2562b2

#3c7ed6

#6d9fe0

#9dbfeb

#cedff5

Tones

Color #1b4781 mixed toward gray.

#244879

#2c4970

#354b68

#3d4c5f

#464d57

Accessibility

Aa White text on this color

9.27:1

Aa Black text on this color

2.26:1

White text reads better on this background (9.27:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#333476 · ΔE 9.5

Deuteranopia

#312d73 · ΔE 11.4

Tritanopia

#1f6d6a · ΔE 26.8

Achromatopsia

#474747 · ΔE 20.5

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

Code

CSS

background-color: #1b4781;

Tailwind (arbitrary value)

bg-[#1b4781]

Related colors

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Cornflower Blue #6495ed

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#1b4781 (#1b4781) is rgb(27, 71, 129) in RGB.

No, #1b4781 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 #1b4781, or check how it holds up for accessibility.

Generate a palette → Check contrast