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Colour

#2781FF

  • #2781FF
  • Blue
  • Dark
  • Nearest: Royal blue

#2781FF is a blue with RGB values 39, 129, 255 and HSL 215°, 100%, 58%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2781FF#2781FF
HEX#2781FF
RGBrgb(39, 129, 255)
RGB (0–1)0.1529, 0.5059, 1
RGB percentages15.3%, 50.6%, 100%
HSLhsl(215, 100%, 57.6%)
HSV / HSBhsv(215, 84.7%, 100%)
CMYK84.7%, 49.4%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,589,183
CSS custom property--colour: #2781FF;

Brightness & contrast

Relative luminance0.23352WCAG 2.x, 0 is black and 1 is white
Perceived brightness132.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.67:1
Contrast with white3.7:1WCAG normal text: Fail
Contrast with black5.67:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#D87E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#308FFFno red cones; affects about 1% of men; ΔE 10.9 from the original
Deuteranopia#007CFDno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#00A0B4no blue cones; rare, and affects men and women equally; ΔE 68.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.7:1WCAG large text: AA
Contrast with black, large text5.67:1WCAG large text: AAA

Named colours

Royal blue · ΔE 11Dodgerblue · ΔE 12.3Medium slateblue · ΔE 22Slate blue · ΔE 22.6Cornflower blue · ΔE 23.8Medium purple · ΔE 26.1
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.99, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFA527
Analogous#27EDFF, #3927FF
Triadic#FF2781, #81FF27
Split complementary#FF3927, #EDFF27
Tetradic#FF27ED, #FFA527, #27FF39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F3F8FF
Lighter +30%#C0DAFF
Lighter +20%#8DBCFF
Lighter +10%#5A9FFF
Darker −10%#0065F3
Darker −20%#0050C0
Darker −30%#003B8D
Darker −40%#00255A
More saturated +25%#2781FF
Less saturated −25%#4285E4

Channel breakdown

R39
G129
B255
Red39 (15.3%)
Green129 (50.6%)
Blue255 (100%)
Hue215°
Saturation (HSL)100%
Lightness57.65%
Dominant channelBlue
Hex per channelR 27 · G 81 · B FF

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Every value on this page was computed from “2781ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.