#1f4d99

Color #1f4d99

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 13.86 Nearest Tailwind class blue-900 #1c398e · ΔE 6.8

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Conversions

HEX

#1f4d99

RGB

rgb(31, 77, 153)

HSL

hsl(217.4, 66.3%, 36.1%)

HSV / HSB

hsv(217.4, 79.7%, 60%)

CMYK

cmyk(79.7%, 49.7%, 0%, 40%)

LAB

lab(33.77, 13.09, -46.02)

LCH

lch(33.77, 47.85, 285.88)

OKLCH

oklch(43.3%, 0.1344, 259.97)

HWB

hwb(217.4, 12.2%, 40%)

Harmony colors

Complementary

#996b1f

Analogous

#1f8a99

#1f4d99

#2e1f99

Triadic

#1f4d99

#991f4d

#4d991f

Split-complementary

#1f4d99

#992e1f

#8a991f

Tetradic

#1f4d99

#6b1f99

#996b1f

#4d991f

Square

#1f4d99

#991f8a

#996b1f

#1f992e

Shades

Color #1f4d99 mixed toward black.

#1a4080

#153366

#10274d

#0a1a33

#050d1a

Tints

Color #1f4d99 mixed toward white.

#2864c6

#4a81da

#78a0e4

#a5c0ed

#d2dff6

Tones

Color #1f4d99 mixed toward gray.

#29508f

#335285

#3e557b

#485770

#525a66

Accessibility

Aa White text on this color

8.14:1

Aa Black text on this color

2.58:1

White text reads better on this background (8.14:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#38398b · ΔE 9

Deuteranopia

#363288 · ΔE 10.9

Tritanopia

#237f7c · ΔE 31

Achromatopsia

#4f4f4f · ΔE 23.2

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

Code

CSS

background-color: #1f4d99;

Tailwind (arbitrary value)

bg-[#1f4d99]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Royal Blue #4169e1

Dodger Blue #1e90ff

Frequently asked questions

#1f4d99 (#1f4d99) is rgb(31, 77, 153) in RGB.

No, #1f4d99 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 #1f4d99, or check how it holds up for accessibility.

Generate a palette → Check contrast