#1d1f47

Color #1d1f47

A moderately saturated very dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 27.35 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 3.3

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1d1f47

RGB

rgb(29, 31, 71)

HSL

hsl(237.1, 42%, 19.6%)

HSV / HSB

hsv(237.1, 59.2%, 27.8%)

CMYK

cmyk(59.2%, 56.3%, 0%, 72.2%)

LAB

lab(13.8, 12.58, -25.45)

LCH

lch(13.8, 28.39, 296.3)

OKLCH

oklch(26.2%, 0.0733, 277.92)

HWB

hwb(237.1, 11.4%, 72.2%)

Harmony colors

Complementary

#47451d

Analogous

#1d3447

#1d1f47

#301d47

Triadic

#1d1f47

#471d1f

#1f471d

Split-complementary

#1d1f47

#47301d

#34471d

Tetradic

#1d1f47

#451d47

#47451d

#1f471d

Square

#1d1f47

#471d34

#47451d

#1d4730

Shades

Color #1d1f47 mixed toward black.

#181a3b

#13152f

#0e1023

#0a0a18

#05050c

Tints

Color #1d1f47 mixed toward white.

#313477

#4549a8

#6d72c4

#9ea1d7

#ced0eb

Tones

Color #1d1f47 mixed toward gray.

#202243

#242540

#27283c

#2b2c39

#2e2f35

Accessibility

Aa White text on this color

15.68:1

Aa Black text on this color

1.34:1

White text reads better on this background (15.68:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1e1e40 · ΔE 2

Deuteranopia

#1e1e3e · ΔE 2.6

Tritanopia

#1d3a38 · ΔE 24.6

Achromatopsia

#232323 · ΔE 18.3

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

Code

CSS

background-color: #1d1f47;

Tailwind (arbitrary value)

bg-[#1d1f47]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#1d1f47 (#1d1f47) is rgb(29, 31, 71) in RGB.

No, #1d1f47 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 #1d1f47, or check how it holds up for accessibility.

Generate a palette → Check contrast