#001f8f

Color #001f8f

A vivid, highly saturated dark blue.

Closest named color Navy #000080 · ΔE 11.9 Nearest Tailwind class indigo-900 #312c85 · ΔE 5

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Conversions

HEX

#001f8f

RGB

rgb(0, 31, 143)

HSL

hsl(227, 100%, 28%)

HSV / HSB

hsv(227, 100%, 56.1%)

CMYK

cmyk(100%, 78.3%, 0%, 43.9%)

LAB

lab(19.89, 38.05, -62.62)

LCH

lch(19.89, 73.27, 301.28)

OKLCH

oklch(32.5%, 0.1828, 263.84)

HWB

hwb(227, 0%, 43.9%)

Harmony colors

Complementary

#8f7000

Analogous

#00668f

#001f8f

#28008f

Triadic

#001f8f

#8f001f

#1f8f00

Split-complementary

#001f8f

#8f2800

#668f00

Tetradic

#001f8f

#70008f

#8f7000

#1f8f00

Square

#001f8f

#8f0066

#8f7000

#008f28

Shades

Color #001f8f mixed toward black.

#001a77

#00155f

#000f47

#000a30

#000518

Tints

Color #001f8f mixed toward white.

#002ccc

#0a3fff

#476fff

#859fff

#c2cfff

Tones

Color #001f8f mixed toward gray.

#0c2683

#182c77

#24336b

#303a5f

#3c4153

Accessibility

Aa White text on this color

13.19:1

Aa Black text on this color

1.59:1

White text reads better on this background (13.19:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#12127f · ΔE 3.7

Deuteranopia

#100d7b · ΔE 4.8

Tritanopia

#02706c · ΔE 38.4

Achromatopsia

#303030 · ΔE 27.7

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

Code

CSS

background-color: #001f8f;

Tailwind (arbitrary value)

bg-[#001f8f]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#001f8f (#001f8f) is rgb(0, 31, 143) in RGB.

No, #001f8f 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 #001f8f, or check how it holds up for accessibility.

Generate a palette → Check contrast