Recognised as Colour

#3F64A8

#3F64A8
Blue
Dark
Nearest: Steel blue

#3F64A8 is a blue with RGB values 63, 100, 168 and HSL 219°, 45%, 45%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3F64A8#3F64A8

HEX#3F64A8

RGBrgb(63, 100, 168)

RGB (0–1)0.2471, 0.3922, 0.6588

RGB percentages24.7%, 39.2%, 65.9%

HSLhsl(218.9, 45.5%, 45.3%)

HSV / HSBhsv(218.9, 62.5%, 65.9%)

CMYK62.5%, 40.5%, 0%, 34.1%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer4,154,536

CSS custom property--colour: #3F64A8;

Brightness & contrast

Relative luminance0.12998WCAG 2.x, 0 is black and 1 is white

Perceived brightness101.4 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 5.83:1

Contrast with white5.83:1WCAG normal text: AA

Contrast with black3.6:1WCAG normal text: Fail

Greyscale equivalent#616161

Inverted#C09B57

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#466AABno red cones; affects about 1% of men; ΔE 3.2 from the original

Deuteranopia#3760A7no green cones; the most common form, about 1% of men; ΔE 2.6 from the original

Tritanopia#00737Eno blue cones; rare, and affects men and women equally; ΔE 41.4 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text5.83:1WCAG large text: AAA

Contrast with black, large text3.6:1WCAG large text: AA

Named colours

Steel blue · ΔE 18.1 Cornflower blue · ΔE 21.1 Dark slateblue · ΔE 21.1 Dodgerblue · ΔE 28.3 Royal blue · ΔE 30.8 Medium purple · ΔE 32.1

Nearest named CSS colourSteel blue (#4682B4)ΔE 18.09, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#A8833F

Analogous#3F98A8, #4F3FA8

Triadic#A83F64, #64A83F

Split complementary#A84F3F, #98A83F

Tetradic#A83F98, #A8833F, #3FA84F

Tints, shades & saturation

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

Lighter +40%#C8D4EB

Lighter +30%#A3B8DD

Lighter +20%#7E9BCF

Lighter +10%#597EC1

Darker −10%#314E83

Darker −20%#23385E

Darker −30%#152239

Darker −40%#070C14

More saturated +25%#225BC5

Less saturated −25%#5C6D8B

Channel breakdown

R63

G100

B168

Red63 (24.7%)

Green100 (39.2%)

Blue168 (65.9%)

Hue218.86°

Saturation (HSL)45.45%

Lightness45.29%

Dominant channelBlue

Hex per channelR 3F · G 64 · B A8

Keep nerding

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

#3F64A8

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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