#1f4b8f

Color #1f4b8f

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.7 Nearest Tailwind class blue-900 #1c398e · ΔE 6.4

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Conversions

HEX

#1f4b8f

RGB

rgb(31, 75, 143)

HSL

hsl(216.4, 64.4%, 34.1%)

HSV / HSB

hsv(216.4, 78.3%, 56.1%)

CMYK

cmyk(78.3%, 47.6%, 0%, 43.9%)

LAB

lab(32.49, 10.44, -41.99)

LCH

lch(32.49, 43.27, 283.96)

OKLCH

oklch(42.1%, 0.1227, 259.06)

HWB

hwb(216.4, 12.2%, 43.9%)

Harmony colors

Complementary

#8f631f

Analogous

#1f838f

#1f4b8f

#2b1f8f

Triadic

#1f4b8f

#8f1f4b

#4b8f1f

Split-complementary

#1f4b8f

#8f2b1f

#838f1f

Tetradic

#1f4b8f

#631f8f

#8f631f

#4b8f1f

Square

#1f4b8f

#8f1f83

#8f631f

#1f8f2b

Shades

Color #1f4b8f mixed toward black.

#1a3f77

#15325f

#0f2647

#0a1930

#050d18

Tints

Color #1f4b8f mixed toward white.

#2963bd

#4780d7

#759fe1

#a3bfeb

#d1dff5

Tones

Color #1f4b8f mixed toward gray.

#284d86

#324f7c

#3b5173

#44536a

#4e5560

Accessibility

Aa White text on this color

8.53:1

Aa Black text on this color

2.46:1

White text reads better on this background (8.53:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#373783 · ΔE 9.3

Deuteranopia

#34317f · ΔE 10.8

Tritanopia

#237875 · ΔE 29.2

Achromatopsia

#4c4c4c · ΔE 22.1

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

Code

CSS

background-color: #1f4b8f;

Tailwind (arbitrary value)

bg-[#1f4b8f]

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

#1f4b8f (#1f4b8f) is rgb(31, 75, 143) in RGB.

No, #1f4b8f is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #1f4b8f, or check how it holds up for accessibility.

Generate a palette → Check contrast