#2a3366

Color #2a3366

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 18.63 Nearest Tailwind class blue-950 #162456 · ΔE 4.9

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

Conversions

HEX

#2a3366

RGB

rgb(42, 51, 102)

HSL

hsl(231, 41.7%, 28.2%)

HSV / HSB

hsv(231, 58.8%, 40%)

CMYK

cmyk(58.8%, 50%, 0%, 60%)

LAB

lab(23.06, 12.99, -31.3)

LCH

lch(23.06, 33.89, 292.54)

OKLCH

oklch(34.2%, 0.0893, 273.27)

HWB

hwb(231, 16.5%, 60%)

Harmony colors

Complementary

#665d2a

Analogous

#2a5166

#2a3366

#3f2a66

Triadic

#2a3366

#662a33

#33662a

Split-complementary

#2a3366

#663f2a

#51662a

Tetradic

#2a3366

#5d2a66

#665d2a

#33662a

Square

#2a3366

#662a51

#665d2a

#2a663f

Shades

Color #2a3366 mixed toward black.

#232a55

#1c2244

#151933

#0e1122

#070811

Tints

Color #2a3366 mixed toward white.

#3c4991

#5261b8

#7d89ca

#a9b0db

#d4d8ed

Tones

Color #2a3366 mixed toward gray.

#2f3661

#343a5c

#393d57

#3e4152

#43444d

Accessibility

Aa White text on this color

11.91:1

Aa Black text on this color

1.76:1

White text reads better on this background (11.91:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2e2e5d · ΔE 2.9

Deuteranopia

#2e2d5a · ΔE 3.6

Tritanopia

#2a5453 · ΔE 25.4

Achromatopsia

#373737 · ΔE 19.9

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

Code

CSS

background-color: #2a3366;

Tailwind (arbitrary value)

bg-[#2a3366]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#2a3366 (#2a3366) is rgb(42, 51, 102) in RGB.

No, #2a3366 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 #2a3366, or check how it holds up for accessibility.

Generate a palette → Check contrast