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Colour

#3377FF

  • #3377FF
  • Blue
  • Dark
  • Nearest: Royal blue

#3377FF is a blue with RGB values 51, 119, 255 and HSL 220°, 100%, 60%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3377FF#3377FF
HEX#3377FF
HEX (short)#37F
RGBrgb(51, 119, 255)
RGB (0–1)0.2, 0.4667, 1
RGB percentages20%, 46.7%, 100%
HSLhsl(220, 100%, 60%)
HSV / HSBhsv(220, 80%, 100%)
CMYK80%, 53.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,373,055
CSS custom property--colour: #3377FF;

Brightness & contrast

Relative luminance0.21117WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.22:1
Contrast with white4.02:1WCAG normal text: Fail
Contrast with black5.22:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#CC8800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0088FFno red cones; affects about 1% of men; ΔE 14.9 from the original
Deuteranopia#0076FCno green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#0099B0no blue cones; rare, and affects men and women equally; ΔE 73.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.02:1WCAG large text: AA
Contrast with black, large text5.22:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.8Medium slateblue · ΔE 16.4Slate blue · ΔE 19.8Dodgerblue · ΔE 20.7Medium purple · ΔE 25.5Cornflower blue · ΔE 31.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.82, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFBB33
Analogous#33DDFF, #5533FF
Triadic#FF3377, #77FF33
Split complementary#FF5533, #DDFF33
Tetradic#FF33DD, #FFBB33, #33FF55

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#CCDDFF
Lighter +20%#99BBFF
Lighter +10%#6699FF
Darker −10%#0055FF
Darker −20%#0044CC
Darker −30%#003399
Darker −40%#002266
More saturated +25%#3377FF
Less saturated −25%#4C80E6

Channel breakdown

R51
G119
B255
Red51 (20%)
Green119 (46.7%)
Blue255 (100%)
Hue220°
Saturation (HSL)100%
Lightness60%
Dominant channelBlue
Hex per channelR 33 · G 77 · B FF

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Every value on this page was computed from “3377ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.