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Colour

#3378FF

  • #3378FF
  • Blue
  • Dark
  • Nearest: Royal blue

#3378FF is a blue with RGB values 51, 120, 255 and HSL 220°, 100%, 60%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3378FF#3378FF
HEX#3378FF
RGBrgb(51, 120, 255)
RGB (0–1)0.2, 0.4706, 1
RGB percentages20%, 47.1%, 100%
HSLhsl(219.7, 100%, 60%)
HSV / HSBhsv(219.7, 80%, 100%)
CMYK80%, 52.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,373,311
CSS custom property--colour: #3378FF;

Brightness & contrast

Relative luminance0.21357WCAG 2.x, 0 is black and 1 is white
Perceived brightness129 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.27:1
Contrast with white3.98:1WCAG normal text: Fail
Contrast with black5.27:1WCAG normal text: AA
Greyscale equivalent#737373
Inverted#CC8700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0089FFno red cones; affects about 1% of men; ΔE 14.9 from the original
Deuteranopia#0077FCno 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 73.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.98:1WCAG large text: AA
Contrast with black, large text5.27:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.6Medium slateblue · ΔE 16.8Slate blue · ΔE 19.9Dodgerblue · ΔE 19.9Medium purple · ΔE 25.4Cornflower blue · ΔE 30.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.59, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFBA33
Analogous#33DEFF, #5433FF
Triadic#FF3378, #78FF33
Split complementary#FF5433, #DEFF33
Tetradic#FF33DE, #FFBA33, #33FF54

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#CCDDFF
Lighter +20%#99BBFF
Lighter +10%#669AFF
Darker −10%#0056FF
Darker −20%#0045CC
Darker −30%#003499
Darker −40%#002266
More saturated +25%#3378FF
Less saturated −25%#4C80E6

Channel breakdown

R51
G120
B255
Red51 (20%)
Green120 (47.1%)
Blue255 (100%)
Hue219.71°
Saturation (HSL)100%
Lightness60%
Dominant channelBlue
Hex per channelR 33 · G 78 · B FF

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Every value on this page was computed from “3378ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.