#1f334f

Color #1f334f

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 14.67 Nearest Tailwind class slate-800 #1d293d · ΔE 4.3

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

Conversions

HEX

#1f334f

RGB

rgb(31, 51, 79)

HSL

hsl(215, 43.6%, 21.6%)

HSV / HSB

hsv(215, 60.8%, 31%)

CMYK

cmyk(60.8%, 35.4%, 0%, 69%)

LAB

lab(20.92, 1.65, -19.6)

LCH

lch(20.92, 19.67, 274.81)

OKLCH

oklch(31.9%, 0.0567, 256.94)

HWB

hwb(215, 12.2%, 69%)

Harmony colors

Complementary

#4f3b1f

Analogous

#1f4b4f

#1f334f

#231f4f

Triadic

#1f334f

#4f1f33

#334f1f

Split-complementary

#1f334f

#4f231f

#4b4f1f

Tetradic

#1f334f

#3b1f4f

#4f3b1f

#334f1f

Square

#1f334f

#4f1f4b

#4f3b1f

#1f4f23

Shades

Color #1f334f mixed toward black.

#1a2b42

#152235

#101a28

#0a111a

#05090d

Tints

Color #1f334f mixed toward white.

#32527f

#4571af

#6f94c7

#9fb8d9

#cfdbec

Tones

Color #1f334f mixed toward gray.

#23344b

#273447

#2b3543

#2f363f

#33363b

Accessibility

Aa White text on this color

12.77:1

Aa Black text on this color

1.64:1

White text reads better on this background (12.77:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#292949 · ΔE 8

Deuteranopia

#282648 · ΔE 9

Tritanopia

#204543 · ΔE 19

Achromatopsia

#323232 · ΔE 13.7

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

Code

CSS

background-color: #1f334f;

Tailwind (arbitrary value)

bg-[#1f334f]

Related colors

Light Steel Blue #b0c4de

Cornflower Blue #6495ed

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#1f334f (#1f334f) is rgb(31, 51, 79) in RGB.

No, #1f334f 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.

Try it → Accessibility

Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

Try it → Generators

Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

Try it →

Build something with this color

Generate a full palette from #1f334f, or check how it holds up for accessibility.

Generate a palette → Check contrast