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Recognised as Colour

#3871FB

  • #3871FB
  • Blue
  • Dark
  • Nearest: Royal blue

#3871FB is a blue with RGB values 56, 113, 251 and HSL 222°, 96%, 60%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3871FB#3871FB
HEX#3871FB
RGBrgb(56, 113, 251)
RGB (0–1)0.2196, 0.4431, 0.9843
RGB percentages22%, 44.3%, 98.4%
HSLhsl(222.5, 96.1%, 60.2%)
HSV / HSBhsv(222.5, 77.7%, 98.4%)
CMYK77.7%, 55%, 0%, 1.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,699,195
CSS custom property--colour: #3871FB;

Brightness & contrast

Relative luminance0.19616WCAG 2.x, 0 is black and 1 is white
Perceived brightness125 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.92:1
Contrast with white4.27:1WCAG normal text: Fail
Contrast with black4.92:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#C78E04

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0084FFno red cones; affects about 1% of men; ΔE 14.9 from the original
Deuteranopia#0072F8no green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#0093ABno blue cones; rare, and affects men and women equally; ΔE 74.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.27:1WCAG large text: AA
Contrast with black, large text4.92:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.1Medium slateblue · ΔE 14.4Slate blue · ΔE 18.5Dodgerblue · ΔE 23.7Medium purple · ΔE 25.3Cornflower blue · ΔE 33.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.05, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FBC238
Analogous#38D3FB, #6138FB
Triadic#FB3871, #71FB38
Split complementary#FB6038, #D3FB38
Tetradic#FB38D2, #FBC238, #38FB60

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#CEDCFE
Lighter +20%#9CB8FD
Lighter +10%#6A95FC
Darker −10%#064DFA
Darker −20%#043EC9
Darker −30%#032E97
Darker −40%#021F65
More saturated +25%#346FFF
Less saturated −25%#517CE2

Channel breakdown

R56
G113
B251
Red56 (22%)
Green113 (44.3%)
Blue251 (98.4%)
Hue222.46°
Saturation (HSL)96.06%
Lightness60.2%
Dominant channelBlue
Hex per channelR 38 · G 71 · B FB

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Every value on this page was computed from “3871fb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.