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Colour

#3F77FF

  • #3F77FF
  • Blue
  • Dark
  • Nearest: Royal blue

#3F77FF is a blue with RGB values 63, 119, 255 and HSL 223°, 100%, 62%. 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

#3F77FF#3F77FF
HEX#3F77FF
RGBrgb(63, 119, 255)
RGB (0–1)0.2471, 0.4667, 1
RGB percentages24.7%, 46.7%, 100%
HSLhsl(222.5, 100%, 62.4%)
HSV / HSBhsv(222.5, 75.3%, 100%)
CMYK75.3%, 53.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,159,487
CSS custom property--colour: #3F77FF;

Brightness & contrast

Relative luminance0.2147WCAG 2.x, 0 is black and 1 is white
Perceived brightness130 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.29:1
Contrast with white3.97:1WCAG normal text: Fail
Contrast with black5.29:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#C08800

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0089FFno red cones; affects about 1% of men; ΔE 16.4 from the original
Deuteranopia#0077FCno green cones; the most common form, about 1% of men; ΔE 5 from the original
Tritanopia#0098B0no blue cones; rare, and affects men and women equally; ΔE 73.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.97:1WCAG large text: AA
Contrast with black, large text5.29:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.7Medium slateblue · ΔE 15.1Slate blue · ΔE 18.9Dodgerblue · ΔE 21.3Medium purple · ΔE 24.5Cornflower blue · ΔE 31.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.65, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFC73F
Analogous#3FD7FF, #673FFF
Triadic#FF3F77, #77FF3F
Split complementary#FF673F, #D7FF3F
Tetradic#FF3FD7, #FFC73F, #3FFF67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D8E3FF
Lighter +20%#A5BFFF
Lighter +10%#729BFF
Darker −10%#0C53FF
Darker −20%#003FD8
Darker −30%#0030A5
Darker −40%#002172
More saturated +25%#3F77FF
Less saturated −25%#5781E7

Channel breakdown

R63
G119
B255
Red63 (24.7%)
Green119 (46.7%)
Blue255 (100%)
Hue222.5°
Saturation (HSL)100%
Lightness62.35%
Dominant channelBlue
Hex per channelR 3F · G 77 · B FF

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Every value on this page was computed from “3f77ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.