#1d3375

Color #1d3375

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.34 Nearest Tailwind class blue-900 #1c398e · ΔE 4

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Conversions

HEX

#1d3375

RGB

rgb(29, 51, 117)

HSL

hsl(225, 60.3%, 28.6%)

HSV / HSB

hsv(225, 75.2%, 45.9%)

CMYK

cmyk(75.2%, 56.4%, 0%, 54.1%)

LAB

lab(23.38, 16.35, -40.47)

LCH

lch(23.38, 43.65, 292)

OKLCH

oklch(34.6%, 0.1167, 266.37)

HWB

hwb(225, 11.4%, 54.1%)

Harmony colors

Complementary

#755f1d

Analogous

#1d5f75

#1d3375

#331d75

Triadic

#1d3375

#751d33

#33751d

Split-complementary

#1d3375

#75331d

#5f751d

Tetradic

#1d3375

#5f1d75

#755f1d

#33751d

Square

#1d3375

#751d5f

#755f1d

#1d7533

Shades

Color #1d3375 mixed toward black.

#182a61

#13224e

#0e193a

#0a1127

#050813

Tints

Color #1d3375 mixed toward white.

#2948a6

#3c61cf

#6d89db

#9eb0e7

#ced8f3

Tones

Color #1d3375 mixed toward gray.

#24376e

#2c3a66

#333e5f

#3a4258

#424550

Accessibility

Aa White text on this color

11.78:1

Aa Black text on this color

1.78:1

White text reads better on this background (11.78:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#28286a · ΔE 4.9

Deuteranopia

#272567 · ΔE 5.8

Tritanopia

#1e5f5d · ΔE 28.8

Achromatopsia

#383838 · ΔE 22.4

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

Code

CSS

background-color: #1d3375;

Tailwind (arbitrary value)

bg-[#1d3375]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1d3375 (#1d3375) is rgb(29, 51, 117) in RGB.

No, #1d3375 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 #1d3375, or check how it holds up for accessibility.

Generate a palette → Check contrast