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Recognised as Colour

#6643FC

  • #6643FC
  • Blue
  • Dark
  • Nearest: Blue violet

#6643FC is a blue with RGB values 102, 67, 252 and HSL 251°, 97%, 63%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Blue violet.

Colour values

#6643FC#6643FC
HEX#6643FC
RGBrgb(102, 67, 252)
RGB (0–1)0.4, 0.2627, 0.9882
RGB percentages40%, 26.3%, 98.8%
HSLhsl(251.4, 96.9%, 62.5%)
HSV / HSBhsv(251.4, 73.4%, 98.8%)
CMYK59.5%, 73.4%, 0%, 1.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,702,076
CSS custom property--colour: #6643FC;

Brightness & contrast

Relative luminance0.13867WCAG 2.x, 0 is black and 1 is white
Perceived brightness114 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.57:1
Contrast with white5.57:1WCAG normal text: AA
Contrast with black3.77:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#99BC03

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006EFFno red cones; affects about 1% of men; ΔE 33.2 from the original
Deuteranopia#0062F9no green cones; the most common form, about 1% of men; ΔE 27 from the original
Tritanopia#00779Dno blue cones; rare, and affects men and women equally; ΔE 95.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.57:1WCAG large text: AAA
Contrast with black, large text3.77:1WCAG large text: AA

Named colours

Blue violet · ΔE 14.4Medium blue · ΔE 20.4Dark violet · ΔE 22.2Dark orchid · ΔE 26.7Blue · ΔE 29.9Medium slateblue · ΔE 30.7
Nearest named CSS colourBlue violet (#8A2BE2)ΔE 14.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D9FC43
Analogous#437DFC, #C343FC
Triadic#FC6643, #43FC66
Split complementary#FCC343, #7CFC43
Tetradic#FC437C, #D9FC43, #43FCC3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E1DAFE
Lighter +20%#B8A7FE
Lighter +10%#8F75FD
Darker −10%#3D11FB
Darker −20%#2B03D6
Darker −30%#2103A3
Darker −40%#170271
More saturated +25%#6440FF
Less saturated −25%#755BE4

Channel breakdown

R102
G67
B252
Red102 (40%)
Green67 (26.3%)
Blue252 (98.8%)
Hue251.35°
Saturation (HSL)96.86%
Lightness62.55%
Dominant channelBlue
Hex per channelR 66 · G 43 · B FC

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Every value on this page was computed from “6643fc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.