Colour

#004FBB

#004FBB
Blue
Dark
Nearest: Royal blue

#004FBB is a blue with RGB values 0, 79, 187 and HSL 215°, 100%, 37%. It is a dark colour, so white text on it reaches 7.4:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#004FBB#004FBB

HEX#004FBB

RGBrgb(0, 79, 187)

RGB (0–1)0, 0.3098, 0.7333

RGB percentages0%, 31%, 73.3%

HSLhsl(214.7, 100%, 36.7%)

HSV / HSBhsv(214.7, 100%, 73.3%)

CMYK100%, 57.8%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer20,411

CSS custom property--colour: #004FBB;

Brightness & contrast

Relative luminance0.0918WCAG 2.x, 0 is black and 1 is white

Perceived brightness87.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 7.4:1

Contrast with white7.4:1WCAG normal text: AAA

Contrast with black2.84:1WCAG normal text: Fail

Greyscale equivalent#464646

Inverted#FFB044

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#005EBFno red cones; affects about 1% of men; ΔE 10.7 from the original

Deuteranopia#004EB9no green cones; the most common form, about 1% of men; ΔE 0.7 from the original

Tritanopia#006B7Dno blue cones; rare, and affects men and women equally; ΔE 62.1 from the original

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

Contrast with white, large text7.4:1WCAG large text: AAA

Contrast with black, large text2.84:1WCAG large text: Fail

Named colours

Royal blue · ΔE 12.2 Slate blue · ΔE 16 Dark slateblue · ΔE 21 Medium slateblue · ΔE 23.8 Rebecca purple · ΔE 24.7 Midnight blue · ΔE 25.4

Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.2, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#BB6C00

Analogous#00ADBB, #0E00BB

Triadic#BB004F, #4FBB00

Split complementary#BB0E00, #ADBB00

Tetradic#BB00AD, #BB6C00, #00BB0E

Tints, shades & saturation

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

Lighter +40%#88BAFF

Lighter +30%#559DFF

Lighter +20%#227FFF

Lighter +10%#0065EE

Darker −10%#003988

Darker −20%#002455

Darker −30%#000E22

Darker −40%#000000

More saturated +25%#004FBB

Less saturated −25%#1753A4

Channel breakdown

G79

B187

Red0 (0%)

Green79 (31%)

Blue187 (73.3%)

Hue214.65°

Saturation (HSL)100%

Lightness36.67%

Dominant channelBlue

Hex per channelR 00 · G 4F · B BB

Keep nerding

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#004FBB

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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