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Recognised as Colour

#646CF2

  • #646CF2
  • Blue
  • Dark
  • Nearest: Medium slateblue

#646CF2 is a blue with RGB values 100, 108, 242 and HSL 237°, 85%, 67%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#646CF2#646CF2
HEX#646CF2
RGBrgb(100, 108, 242)
RGB (0–1)0.3922, 0.4235, 0.949
RGB percentages39.2%, 42.4%, 94.9%
HSLhsl(236.6, 84.5%, 67.1%)
HSV / HSBhsv(236.6, 58.7%, 94.9%)
CMYK58.7%, 55.4%, 0%, 5.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,581,490
CSS custom property--colour: #646CF2;

Brightness & contrast

Relative luminance0.19845WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.97:1
Contrast with white4.23:1WCAG normal text: Fail
Contrast with black4.97:1WCAG normal text: AA
Greyscale equivalent#747474
Inverted#9B930D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0081F7no red cones; affects about 1% of men; ΔE 20.8 from the original
Deuteranopia#0075EFno green cones; the most common form, about 1% of men; ΔE 16.1 from the original
Tritanopia#008CA5no blue cones; rare, and affects men and women equally; ΔE 74.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.23:1WCAG large text: AA
Contrast with black, large text4.97:1WCAG large text: AAA

Named colours

Medium slateblue · ΔE 6.3Royal blue · ΔE 10.6Slate blue · ΔE 12.5Medium purple · ΔE 18.8Dodgerblue · ΔE 27.2Rebecca purple · ΔE 29.4
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 6.33, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F2EA64
Analogous#64B3F2, #A364F2
Triadic#F2646C, #6CF264
Split complementary#F2A364, #B3F264
Tetradic#F264B3, #F2EA64, #64F2A3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F1F2FE
Lighter +20%#C2C5FA
Lighter +10%#9399F6
Darker −10%#353FEE
Darker −20%#131EDD
Darker −30%#0F18AE
Darker −40%#0B117F
More saturated +25%#5760FF
Less saturated −25%#797FDD

Channel breakdown

R100
G108
B242
Red100 (39.2%)
Green108 (42.4%)
Blue242 (94.9%)
Hue236.62°
Saturation (HSL)84.52%
Lightness67.06%
Dominant channelBlue
Hex per channelR 64 · G 6C · B F2

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Every value on this page was computed from “646cf2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.