#1b3e59

Color #1b3e59

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 12.43 Nearest Tailwind class sky-950 #052f4a · ΔE 4.8

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Conversions

HEX

#1b3e59

RGB

rgb(27, 62, 89)

HSL

hsl(206.1, 53.4%, 22.7%)

HSV / HSB

hsv(206.1, 69.7%, 34.9%)

CMYK

cmyk(69.7%, 30.3%, 0%, 65.1%)

LAB

lab(24.95, -2.92, -19.9)

LCH

lch(24.95, 20.11, 261.65)

OKLCH

oklch(35.2%, 0.0623, 244.3)

HWB

hwb(206.1, 10.6%, 65.1%)

Harmony colors

Complementary

#59361b

Analogous

#1b5955

#1b3e59

#1b1f59

Triadic

#1b3e59

#591b3e

#3e591b

Split-complementary

#1b3e59

#591b1f

#59551b

Tetradic

#1b3e59

#361b59

#59361b

#3e591b

Square

#1b3e59

#551b59

#59361b

#1f591b

Shades

Color #1b3e59 mixed toward black.

#16344a

#12293b

#0d1f2c

#09151e

#040a0f

Tints

Color #1b3e59 mixed toward white.

#2a618b

#3a84be

#68a3d1

#9ac2e0

#cde0f0

Tones

Color #1b3e59 mixed toward gray.

#203d54

#253d4e

#2a3c49

#303b44

#353b3f

Accessibility

Aa White text on this color

11.17:1

Aa Black text on this color

1.88:1

White text reads better on this background (11.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2e2e53 · ΔE 12.8

Deuteranopia

#2c2952 · ΔE 13.8

Tritanopia

#1e4f4e · ΔE 16.6

Achromatopsia

#3b3b3b · ΔE 14

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

Code

CSS

background-color: #1b3e59;

Tailwind (arbitrary value)

bg-[#1b3e59]

Related colors

Steel Blue #4682b4

Alice Blue #f0f8ff

Charcoal #36454f

Light Sky Blue #87cefa

Dodger Blue #1e90ff

Light Slate Gray #778899

Frequently asked questions

#1b3e59 (#1b3e59) is rgb(27, 62, 89) in RGB.

No, #1b3e59 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 #1b3e59, or check how it holds up for accessibility.

Generate a palette → Check contrast