Colour

#004BBB

#004BBB
Blue
Dark
Nearest: Royal blue

#004BBB is a blue with RGB values 0, 75, 187 and HSL 216°, 100%, 37%. It is a dark colour, so white text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#004BBB#004BBB

HEX#004BBB

RGBrgb(0, 75, 187)

RGB (0–1)0, 0.2941, 0.7333

RGB percentages0%, 29.4%, 73.3%

HSLhsl(215.9, 100%, 36.7%)

HSV / HSBhsv(215.9, 100%, 73.3%)

CMYK100%, 59.9%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer19,387

CSS custom property--colour: #004BBB;

Brightness & contrast

Relative luminance0.0862WCAG 2.x, 0 is black and 1 is white

Perceived brightness85.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.71:1

Contrast with white7.71:1WCAG normal text: AAA

Contrast with black2.72:1WCAG normal text: Fail

Greyscale equivalent#434343

Inverted#FFB444

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#005BBFno red cones; affects about 1% of men; ΔE 11.6 from the original

Deuteranopia#004BB9no green cones; the most common form, about 1% of men; ΔE 1.2 from the original

Tritanopia#00687Bno blue cones; rare, and affects men and women equally; ΔE 64.3 from the original

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

Contrast with white, large text7.71:1WCAG large text: AAA

Contrast with black, large text2.72:1WCAG large text: Fail

Named colours

Royal blue · ΔE 12.7 Slate blue · ΔE 15.3 Dark slateblue · ΔE 22.3 Medium slateblue · ΔE 22.5 Rebecca purple · ΔE 23.7 Midnight blue · ΔE 24.7

Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.66, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BB7000

Analogous#00A9BB, #1200BB

Triadic#BB004B, #4BBB00

Split complementary#BB1200, #A9BB00

Tetradic#BB00A9, #BB7000, #00BB12

Tints, shades & saturation

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

Lighter +40%#88B8FF

Lighter +30%#5599FF

Lighter +20%#227BFF

Lighter +10%#005FEE

Darker −10%#003788

Darker −20%#002255

Darker −30%#000E22

Darker −40%#000000

More saturated +25%#004BBB

Less saturated −25%#1750A4

Channel breakdown

G75

B187

Red0 (0%)

Green75 (29.4%)

Blue187 (73.3%)

Hue215.94°

Saturation (HSL)100%

Lightness36.67%

Dominant channelBlue

Hex per channelR 00 · G 4B · B BB

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#004BBB

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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