#423b71

Color #423b71

A muted dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 14.79 Nearest Tailwind class indigo-900 #312c85 · ΔE 7.7

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Conversions

HEX

#423b71

RGB

rgb(66, 59, 113)

HSL

hsl(247.8, 31.4%, 33.7%)

HSV / HSB

hsv(247.8, 47.8%, 44.3%)

CMYK

cmyk(41.6%, 47.8%, 0%, 55.7%)

LAB

lab(28.06, 17.58, -30.28)

LCH

lch(28.06, 35.01, 300.14)

OKLCH

oklch(38.7%, 0.0896, 287.4)

HWB

hwb(247.8, 23.1%, 55.7%)

Harmony colors

Complementary

#6a713b

Analogous

#3b4f71

#423b71

#5d3b71

Triadic

#423b71

#71423b

#3b7142

Split-complementary

#423b71

#715d3b

#4f713b

Tetradic

#423b71

#713b6a

#6a713b

#3b7142

Square

#423b71

#713b4f

#6a713b

#3b715d

Shades

Color #423b71 mixed toward black.

#37315e

#2c274b

#211d38

#161426

#0b0a13

Tints

Color #423b71 mixed toward white.

#584e96

#746bb2

#9790c5

#bab5d8

#dcdaec

Tones

Color #423b71 mixed toward gray.

#453f6c

#494468

#4c4863

#4f4d5f

#53515a

Accessibility

Aa White text on this color

10.02:1

Aa Black text on this color

2.1:1

White text reads better on this background (10.02:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3f3f67 · ΔE 3.8

Deuteranopia

#3f4064 · ΔE 4.9

Tritanopia

#425e5c · ΔE 25.6

Achromatopsia

#424242 · ΔE 20.7

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

Code

CSS

background-color: #423b71;

Tailwind (arbitrary value)

bg-[#423b71]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#423b71 (#423b71) is rgb(66, 59, 113) in RGB.

No, #423b71 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 #423b71, or check how it holds up for accessibility.

Generate a palette → Check contrast