#063b8f

Color #063b8f

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 11.44 Nearest Tailwind class blue-900 #1c398e · ΔE 1.9

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

Conversions

HEX

#063b8f

RGB

rgb(6, 59, 143)

HSL

hsl(216.8, 91.9%, 29.2%)

HSV / HSB

hsv(216.8, 95.8%, 56.1%)

CMYK

cmyk(95.8%, 58.7%, 0%, 43.9%)

LAB

lab(27.15, 19.45, -50.67)

LCH

lch(27.15, 54.27, 291)

OKLCH

oklch(37.9%, 0.1487, 260.32)

HWB

hwb(216.8, 2.4%, 43.9%)

Harmony colors

Complementary

#8f5a06

Analogous

#067f8f

#063b8f

#16068f

Triadic

#063b8f

#8f063b

#3b8f06

Split-complementary

#063b8f

#8f1606

#7f8f06

Tetradic

#063b8f

#5a068f

#8f5a06

#3b8f06

Square

#063b8f

#8f067f

#8f5a06

#068f16

Shades

Color #063b8f mixed toward black.

#053177

#04275f

#031d47

#021430

#010a18

Tints

Color #063b8f mixed toward white.

#0853c9

#186ef5

#5292f8

#8cb6fa

#c5dbfd

Tones

Color #063b8f mixed toward gray.

#113e83

#1d4078

#28436d

#344561

#3f4856

Accessibility

Aa White text on this color

10.35:1

Aa Black text on this color

2.03:1

White text reads better on this background (10.35:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#272781 · ΔE 8

Deuteranopia

#24207d · ΔE 9.7

Tritanopia

#0d7471 · ΔE 33.2

Achromatopsia

#404040 · ΔE 24.6

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

Code

CSS

background-color: #063b8f;

Tailwind (arbitrary value)

bg-[#063b8f]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#063b8f (#063b8f) is rgb(6, 59, 143) in RGB.

No, #063b8f 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 #063b8f, or check how it holds up for accessibility.

Generate a palette → Check contrast