#1f447d

Color #1f447d

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 19.07 Nearest Tailwind class blue-900 #1c398e · ΔE 5.3

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

Conversions

HEX

#1f447d

RGB

rgb(31, 68, 125)

HSL

hsl(216.4, 60.3%, 30.6%)

HSV / HSB

hsv(216.4, 75.2%, 49%)

CMYK

cmyk(75.2%, 45.6%, 0%, 51%)

LAB

lab(29.17, 7.99, -36.19)

LCH

lch(29.17, 37.06, 282.45)

OKLCH

oklch(39.2%, 0.1056, 258.91)

HWB

hwb(216.4, 12.2%, 51%)

Harmony colors

Complementary

#7d581f

Analogous

#1f737d

#1f447d

#291f7d

Triadic

#1f447d

#7d1f44

#447d1f

Split-complementary

#1f447d

#7d291f

#737d1f

Tetradic

#1f447d

#581f7d

#7d581f

#447d1f

Square

#1f447d

#7d1f73

#7d581f

#1f7d29

Shades

Color #1f447d mixed toward black.

#1a3968

#152d53

#0f223f

#0a172a

#050b15

Tints

Color #1f447d mixed toward white.

#2b5eac

#427ad0

#719bdc

#a0bce8

#d0def3

Tones

Color #1f447d mixed toward gray.

#274675

#2f476d

#374966

#3e4b5e

#464c56

Accessibility

Aa White text on this color

9.63:1

Aa Black text on this color

2.18:1

White text reads better on this background (9.63:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#333372 · ΔE 8.6

Deuteranopia

#312e70 · ΔE 9.8

Tritanopia

#226967 · ΔE 26.3

Achromatopsia

#454545 · ΔE 20.4

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

Code

CSS

background-color: #1f447d;

Tailwind (arbitrary value)

bg-[#1f447d]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#1f447d (#1f447d) is rgb(31, 68, 125) in RGB.

No, #1f447d 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 #1f447d, or check how it holds up for accessibility.

Generate a palette → Check contrast