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Recognised as Colour

#3378F0

  • #3378F0
  • Blue
  • Dark
  • Nearest: Royal blue

#3378F0 is a blue with RGB values 51, 120, 240 and HSL 218°, 86%, 57%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3378F0#3378F0
HEX#3378F0
RGBrgb(51, 120, 240)
RGB (0–1)0.2, 0.4706, 0.9412
RGB percentages20%, 47.1%, 94.1%
HSLhsl(218.1, 86.3%, 57.1%)
HSV / HSBhsv(218.1, 78.8%, 94.1%)
CMYK78.8%, 50%, 0%, 5.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,373,296
CSS custom property--colour: #3378F0;

Brightness & contrast

Relative luminance0.20428WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.09:1
Contrast with white4.13:1WCAG normal text: Fail
Contrast with black5.09:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#CC870F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2B86F4no red cones; affects about 1% of men; ΔE 9.7 from the original
Deuteranopia#0075EEno green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#0095A9no blue cones; rare, and affects men and women equally; ΔE 65.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.13:1WCAG large text: AA
Contrast with black, large text5.09:1WCAG large text: AAA

Named colours

Royal blue · ΔE 7.2Dodgerblue · ΔE 13.2Slate blue · ΔE 18.9Medium slateblue · ΔE 20.4Cornflower blue · ΔE 22.7Medium purple · ΔE 23.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.24, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F0AB33
Analogous#33D7F0, #4C33F0
Triadic#F03378, #78F033
Split complementary#F04C33, #D7F033
Tetradic#F033D7, #F0AB33, #33F04C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F6FE
Lighter +30%#C2D6FA
Lighter +20%#92B7F7
Lighter +10%#6397F3
Darker −10%#105CE0
Darker −20%#0D48B0
Darker −30%#093581
Darker −40%#062151
More saturated +25%#2474FF
Less saturated −25%#4E7FD5

Channel breakdown

R51
G120
B240
Red51 (20%)
Green120 (47.1%)
Blue240 (94.1%)
Hue218.1°
Saturation (HSL)86.3%
Lightness57.06%
Dominant channelBlue
Hex per channelR 33 · G 78 · B F0

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Every value on this page was computed from “3378f0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.