Colour

#003367

#003367
Blue
Dark
Nearest: Dark slateblue

#003367 is a blue with RGB values 0, 51, 103 and HSL 210°, 100%, 20%. It is a dark colour, so white text on it reaches 12.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#003367#003367

HEX#003367

RGBrgb(0, 51, 103)

RGB (0–1)0, 0.2, 0.4039

RGB percentages0%, 20%, 40.4%

HSLhsl(210.3, 100%, 20.2%)

HSV / HSBhsv(210.3, 100%, 40.4%)

CMYK100%, 50.5%, 0%, 59.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer13,159

CSS custom property--colour: #003367;

Brightness & contrast

Relative luminance0.03347WCAG 2.x, 0 is black and 1 is white

Perceived brightness52.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.58:1

Contrast with white12.58:1WCAG normal text: AAA

Contrast with black1.67:1WCAG normal text: Fail

Greyscale equivalent#2C2C2C

Inverted#FFCC98

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#143869no red cones; affects about 1% of men; ΔE 3.4 from the original

Deuteranopia#002F66no green cones; the most common form, about 1% of men; ΔE 3.2 from the original

Tritanopia#004048no blue cones; rare, and affects men and women equally; ΔE 33.2 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text12.58:1WCAG large text: AAA

Contrast with black, large text1.67:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.3 Midnight blue · ΔE 29.1 Steel blue · ΔE 33.2 Dark slate grey · ΔE 37.7 Rebecca purple · ΔE 39.4 Slate grey · ΔE 40.8

Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.27, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#673400

Analogous#006667, #010067

Triadic#670033, #336700

Split complementary#670100, #666700

Tetradic#670066, #673400, #006701

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#3499FF

Lighter +30%#017FFF

Lighter +20%#0066CD

Lighter +10%#004C9A

Darker −10%#001A34

Darker −20%#000001

Darker −30%#000000

Darker −40%#000000

More saturated +25%#003367

Less saturated −25%#0D335A

Channel breakdown

G51

B103

Red0 (0%)

Green51 (20%)

Blue103 (40.4%)

Hue210.29°

Saturation (HSL)100%

Lightness20.2%

Dominant channelBlue

Hex per channelR 00 · G 33 · B 67

Keep nerding

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#003367

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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