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#0000FF

Blue Color — #0000FF

Complete color reference for #0000FF: conversions to RGB, HSL, HSV, CMYK, color harmonies, shades & tints scale, and WCAG accessibility contrast ratios.

Color Format Conversions

HEX#0000FF
RGBrgb(0, 0, 255)
HSLhsl(240, 100%, 50%)
HSVhsv(240, 100%, 100%)
CMYKC:100% M:100% Y:0% K:0%
CSS Colorblue
Decimal255
Luminance0.0722

WCAG Accessibility Contrast

#0000FF on White
Ratio: 8.59:1 — AAA
#0000FF on Black
Ratio: 2.44:1 — Fail
White on #0000FF
Ratio: 8.59:1 — AAA
Black on #0000FF
Ratio: 2.44:1 — Fail

WCAG AA requires ≥4.5:1 (normal text) or ≥3:1 (large text). WCAG AAA requires ≥7:1.

Shades & Tints Scale

50#F2F2FF
100#D9D9FF
200#B3B3FF
300#8C8CFF
400#5959FF
500#0000FF
600#0000CC
700#000099
800#000066
900#000040

Steps 50–400 are tints (mixed with white); 500 is the base color; 600–900 are shades (mixed with black).

Color Harmonies

Related Color Tools

Frequently Asked Questions

What is the RGB equivalent of #0000FF?

The RGB equivalent is rgb(0, 0, 255). The red channel is 0, green is 0, and blue is 255 (scale 0–255).

What is the HSL value of #0000FF?

The HSL value is hsl(240, 100%, 50%). Hue is 240°, saturation is 100%, and lightness is 50%.

Does #0000FF meet WCAG accessibility standards?

On a white background, #0000FF achieves a 8.59:1 contrast ratio (AAA). On a black background it achieves 2.44:1 (Fail). WCAG AA requires ≥4.5:1 for normal text.

What is the complementary color of #0000FF?

The complementary color (180° opposite on the hue wheel) of #0000FF is #FFFF00.