#1d3580

Color #1d3580

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 9.45 Nearest Tailwind class blue-900 #1c398e · ΔE 2.3

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Conversions

HEX

#1d3580

RGB

rgb(29, 53, 128)

HSL

hsl(225.5, 63.1%, 30.8%)

HSV / HSB

hsv(225.5, 77.3%, 50.2%)

CMYK

cmyk(77.3%, 58.6%, 0%, 49.8%)

LAB

lab(24.84, 19.37, -45.06)

LCH

lch(24.84, 49.05, 293.26)

OKLCH

oklch(35.9%, 0.1303, 266.35)

HWB

hwb(225.5, 11.4%, 49.8%)

Harmony colors

Complementary

#80681d

Analogous

#1d6680

#1d3580

#371d80

Triadic

#1d3580

#801d35

#35801d

Split-complementary

#1d3580

#80371d

#66801d

Tetradic

#1d3580

#681d80

#80681d

#35801d

Square

#1d3580

#801d66

#80681d

#1d8037

Shades

Color #1d3580 mixed toward black.

#182c6b

#132355

#0e1a40

#0a122b

#050915

Tints

Color #1d3580 mixed toward white.

#2849b0

#3f63d4

#6f8ade

#9fb1e9

#cfd8f4

Tones

Color #1d3580 mixed toward gray.

#253978

#2e3d70

#364267

#3e465f

#464a57

Accessibility

Aa White text on this color

11.21:1

Aa Black text on this color

1.87:1

White text reads better on this background (11.21:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#292973 · ΔE 5.1

Deuteranopia

#282670 · ΔE 5.9

Tritanopia

#1f6865 · ΔE 31.1

Achromatopsia

#3b3b3b · ΔE 23.6

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

Code

CSS

background-color: #1d3580;

Tailwind (arbitrary value)

bg-[#1d3580]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1d3580 (#1d3580) is rgb(29, 53, 128) in RGB.

No, #1d3580 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 #1d3580, or check how it holds up for accessibility.

Generate a palette → Check contrast