#2f3c81

Color #2f3c81

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 8.85 Nearest Tailwind class blue-900 #1c398e · ΔE 3.2

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

Conversions

HEX

#2f3c81

RGB

rgb(47, 60, 129)

HSL

hsl(230.5, 46.6%, 34.5%)

HSV / HSB

hsv(230.5, 63.6%, 50.6%)

CMYK

cmyk(63.6%, 53.5%, 0%, 49.4%)

LAB

lab(27.9, 17.82, -40.69)

LCH

lch(27.9, 44.42, 293.65)

OKLCH

oklch(38.5%, 0.1167, 271.82)

HWB

hwb(230.5, 18.4%, 49.4%)

Harmony colors

Complementary

#81742f

Analogous

#2f6581

#2f3c81

#4b2f81

Triadic

#2f3c81

#812f3c

#3c812f

Split-complementary

#2f3c81

#814b2f

#65812f

Tetradic

#2f3c81

#742f81

#81742f

#3c812f

Square

#2f3c81

#812f65

#81742f

#2f814b

Shades

Color #2f3c81 mixed toward black.

#27326b

#1f2856

#171e40

#10142b

#080a15

Tints

Color #2f3c81 mixed toward white.

#3e4faa

#5c6cc4

#8591d2

#adb6e1

#d6daf0

Tones

Color #2f3c81 mixed toward gray.

#36417a

#3d4573

#434a6c

#4a4f66

#51535f

Accessibility

Aa White text on this color

10.08:1

Aa Black text on this color

2.08:1

White text reads better on this background (10.08:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#353575 · ΔE 3.6

Deuteranopia

#343372 · ΔE 4.2

Tritanopia

#306a67 · ΔE 29.4

Achromatopsia

#424242 · ΔE 22.6

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

Code

CSS

background-color: #2f3c81;

Tailwind (arbitrary value)

bg-[#2f3c81]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#2f3c81 (#2f3c81) is rgb(47, 60, 129) in RGB.

No, #2f3c81 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 #2f3c81, or check how it holds up for accessibility.

Generate a palette → Check contrast