#1b1559

Color #1b1559

A moderately saturated dark blue.

Closest named color Midnight Blue #191970 · ΔE 11.73 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 3.8

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Conversions

HEX

#1b1559

RGB

rgb(27, 21, 89)

HSL

hsl(245.3, 61.8%, 21.6%)

HSV / HSB

hsv(245.3, 76.4%, 34.9%)

CMYK

cmyk(69.7%, 76.4%, 0%, 65.1%)

LAB

lab(12.55, 26.1, -39.81)

LCH

lch(12.55, 47.6, 303.25)

OKLCH

oklch(25.7%, 0.1161, 278.37)

HWB

hwb(245.3, 8.2%, 65.1%)

Harmony colors

Complementary

#535915

Analogous

#153159

#1b1559

#3d1559

Triadic

#1b1559

#591b15

#15591b

Split-complementary

#1b1559

#593d15

#315915

Tetradic

#1b1559

#591553

#535915

#15591b

Square

#1b1559

#591531

#535915

#15593d

Shades

Color #1b1559 mixed toward black.

#17124a

#120e3b

#0e0b2d

#09071e

#05040f

Tints

Color #1b1559 mixed toward white.

#2b228f

#3c2ec5

#685dd9

#9a93e6

#cdc9f2

Tones

Color #1b1559 mixed toward gray.

#201b53

#24204e

#292648

#2e2c42

#32313d

Accessibility

Aa White text on this color

16.18:1

Aa Black text on this color

1.3:1

White text reads better on this background (16.18:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#19194f · ΔE 3.1

Deuteranopia

#19194c · ΔE 3.7

Tritanopia

#1b4543 · ΔE 28.5

Achromatopsia

#212121 · ΔE 23.6

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

Code

CSS

background-color: #1b1559;

Tailwind (arbitrary value)

bg-[#1b1559]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1b1559 (#1b1559) is rgb(27, 21, 89) in RGB.

No, #1b1559 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 #1b1559, or check how it holds up for accessibility.

Generate a palette → Check contrast