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Colour

#2F81FF

  • #2F81FF
  • Blue
  • Dark
  • Nearest: Royal blue

#2F81FF is a blue with RGB values 47, 129, 255 and HSL 216°, 100%, 59%. 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

#2F81FF#2F81FF
HEX#2F81FF
RGBrgb(47, 129, 255)
RGB (0–1)0.1843, 0.5059, 1
RGB percentages18.4%, 50.6%, 100%
HSLhsl(216.3, 100%, 59.2%)
HSV / HSBhsv(216.3, 81.6%, 100%)
CMYK81.6%, 49.4%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,113,471
CSS custom property--colour: #2F81FF;

Brightness & contrast

Relative luminance0.23525WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.7:1
Contrast with white3.68:1WCAG normal text: Fail
Contrast with black5.7:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#D07E00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#318FFFno red cones; affects about 1% of men; ΔE 11.1 from the original
Deuteranopia#007CFDno green cones; the most common form, about 1% of men; ΔE 3.2 from the original
Tritanopia#00A0B4no blue cones; rare, and affects men and women equally; ΔE 68.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.68:1WCAG large text: AA
Contrast with black, large text5.7:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.7Dodgerblue · ΔE 12.6Medium slateblue · ΔE 21.4Slate blue · ΔE 22.1Cornflower blue · ΔE 23.8Medium purple · ΔE 25.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFAD2F
Analogous#2FE9FF, #452FFF
Triadic#FF2F81, #81FF2F
Split complementary#FF452F, #E9FF2F
Tetradic#FF2FE9, #FFAD2F, #2FFF45

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFDFF
Lighter +30%#C8DEFF
Lighter +20%#95BFFF
Lighter +10%#62A0FF
Darker −10%#0063FB
Darker −20%#004FC8
Darker −30%#003B95
Darker −40%#002762
More saturated +25%#2F81FF
Less saturated −25%#4987E5

Channel breakdown

R47
G129
B255
Red47 (18.4%)
Green129 (50.6%)
Blue255 (100%)
Hue216.35°
Saturation (HSL)100%
Lightness59.22%
Dominant channelBlue
Hex per channelR 2F · G 81 · B FF

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Every value on this page was computed from “2f81ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.