#003aaa

Color #003aaa

A vivid, highly saturated dark blue.

Closest named color Slate Blue #6a5acd · ΔE 17.9 Nearest Tailwind class blue-800 #193cb8 · ΔE 2.5

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

Conversions

HEX

#003aaa

RGB

rgb(0, 58, 170)

HSL

hsl(219.5, 100%, 33.3%)

HSV / HSB

hsv(219.5, 100%, 66.7%)

CMYK

cmyk(100%, 65.9%, 0%, 33.3%)

LAB

lab(29.23, 30.96, -63.7)

LCH

lch(29.23, 70.83, 295.92)

OKLCH

oklch(40.1%, 0.1866, 262.05)

HWB

hwb(219.5, 0%, 33.3%)

Harmony colors

Complementary

#aa7000

Analogous

#008faa

#003aaa

#1b00aa

Triadic

#003aaa

#aa003a

#3aaa00

Split-complementary

#003aaa

#aa1b00

#8faa00

Tetradic

#003aaa

#7000aa

#aa7000

#3aaa00

Square

#003aaa

#aa008f

#aa7000

#00aa1b

Shades

Color #003aaa mixed toward black.

#00308e

#002771

#001d55

#001339

#000a1c

Tints

Color #003aaa mixed toward white.

#004de3

#1c6aff

#558fff

#8eb4ff

#c6daff

Tones

Color #003aaa mixed toward gray.

#0e3f9c

#1c438e

#2a477f

#394c71

#475063

Accessibility

Aa White text on this color

9.61:1

Aa Black text on this color

2.19:1

White text reads better on this background (9.61:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#252598 · ΔE 6.9

Deuteranopia

#221e94 · ΔE 8.5

Tritanopia

#078884 · ΔE 39.2

Achromatopsia

#454545 · ΔE 27.3

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

Code

CSS

background-color: #003aaa;

Tailwind (arbitrary value)

bg-[#003aaa]

Related colors

Cornflower Blue #6495ed

Royal Blue #4169e1

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Frequently asked questions

#003aaa (#003aaa) is rgb(0, 58, 170) in RGB.

No, #003aaa 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 #003aaa, or check how it holds up for accessibility.

Generate a palette → Check contrast