#004f9f

Color #004f9f

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.98 Nearest Tailwind class sky-800 #00598a · ΔE 6.2

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

Conversions

HEX

#004f9f

RGB

rgb(0, 79, 159)

HSL

hsl(210.2, 100%, 31.2%)

HSV / HSB

hsv(210.2, 100%, 62.4%)

CMYK

cmyk(100%, 50.3%, 0%, 37.6%)

LAB

lab(34.18, 12.05, -49.01)

LCH

lch(34.18, 50.47, 283.81)

OKLCH

oklch(43.6%, 0.146, 255.48)

HWB

hwb(210.2, 0%, 37.6%)

Harmony colors

Complementary

#9f5000

Analogous

#009f9f

#004f9f

#01009f

Triadic

#004f9f

#9f004f

#4f9f00

Split-complementary

#004f9f

#9f0100

#9f9f00

Tetradic

#004f9f

#50009f

#9f5000

#4f9f00

Square

#004f9f

#9f009f

#9f5000

#009f01

Shades

Color #004f9f mixed toward black.

#004285

#00356a

#002850

#001a35

#000d1b

Tints

Color #004f9f mixed toward white.

#006cda

#1589ff

#50a7ff

#8ac4ff

#c5e2ff

Tones

Color #004f9f mixed toward gray.

#0d4f92

#1b4f85

#284f77

#354f6a

#424f5d

Accessibility

Aa White text on this color

8.02:1

Aa Black text on this color

2.62:1

White text reads better on this background (8.02:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#343491 · ΔE 11.8

Deuteranopia

#302a8d · ΔE 14.3

Tritanopia

#0d8481 · ΔE 32.1

Achromatopsia

#505050 · ΔE 23.7

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

Code

CSS

background-color: #004f9f;

Tailwind (arbitrary value)

bg-[#004f9f]

Related colors

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Steel Blue #4682b4

Light Steel Blue #b0c4de

Frequently asked questions

#004f9f (#004f9f) is rgb(0, 79, 159) in RGB.

No, #004f9f 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 #004f9f, or check how it holds up for accessibility.

Generate a palette → Check contrast