#1f3989

Color #1f3989

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 8.79 Nearest Tailwind class blue-900 #1c398e · ΔE 0.8

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Conversions

HEX

#1f3989

RGB

rgb(31, 57, 137)

HSL

hsl(225.3, 63.1%, 32.9%)

HSV / HSB

hsv(225.3, 77.4%, 53.7%)

CMYK

cmyk(77.4%, 58.4%, 0%, 46.3%)

LAB

lab(26.8, 20.43, -47.5)

LCH

lch(26.8, 51.71, 293.27)

OKLCH

oklch(37.7%, 0.1373, 266.16)

HWB

hwb(225.3, 12.2%, 46.3%)

Harmony colors

Complementary

#896f1f

Analogous

#1f6e89

#1f3989

#3a1f89

Triadic

#1f3989

#891f39

#39891f

Split-complementary

#1f3989

#893a1f

#6e891f

Tetradic

#1f3989

#6f1f89

#896f1f

#39891f

Square

#1f3989

#891f6e

#896f1f

#1f893a

Shades

Color #1f3989 mixed toward black.

#1a2f72

#15265b

#0f1c44

#0a132e

#050917

Tints

Color #1f3989 mixed toward white.

#294cb7

#4568d5

#738edf

#a2b4ea

#d0d9f4

Tones

Color #1f3989 mixed toward gray.

#283d80

#314277

#39466e

#424b66

#4b4f5d

Accessibility

Aa White text on this color

10.48:1

Aa Black text on this color

2:1

White text reads better on this background (10.48:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2c2d7b · ΔE 5.1

Deuteranopia

#2b2978 · ΔE 6.2

Tritanopia

#216f6c · ΔE 32

Achromatopsia

#3f3f3f · ΔE 24.1

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

Code

CSS

background-color: #1f3989;

Tailwind (arbitrary value)

bg-[#1f3989]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1f3989 (#1f3989) is rgb(31, 57, 137) in RGB.

No, #1f3989 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 #1f3989, or check how it holds up for accessibility.

Generate a palette → Check contrast