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Colour

#646FE0

  • #646FE0
  • Blue
  • Dark
  • Nearest: Royal blue

#646FE0 is a blue with RGB values 100, 111, 224 and HSL 235°, 67%, 64%. 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

#646FE0#646FE0
HEX#646FE0
RGBrgb(100, 111, 224)
RGB (0–1)0.3922, 0.4353, 0.8784
RGB percentages39.2%, 43.5%, 87.8%
HSLhsl(234.7, 66.7%, 63.5%)
HSV / HSBhsv(234.7, 55.4%, 87.8%)
CMYK55.4%, 50.4%, 0%, 12.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,582,240
CSS custom property--colour: #646FE0;

Brightness & contrast

Relative luminance0.1946WCAG 2.x, 0 is black and 1 is white
Perceived brightness126.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.89:1
Contrast with white4.29:1WCAG normal text: Fail
Contrast with black4.89:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#9B901F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#347FE4no red cones; affects about 1% of men; ΔE 16.2 from the original
Deuteranopia#1F75DEno green cones; the most common form, about 1% of men; ΔE 14 from the original
Tritanopia#20889Dno blue cones; rare, and affects men and women equally; ΔE 63.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.29:1WCAG large text: AA
Contrast with black, large text4.89:1WCAG large text: AAA

Named colours

Royal blue · ΔE 7.2Slate blue · ΔE 10.1Medium purple · ΔE 13.2Medium slateblue · ΔE 14.5Dodgerblue · ΔE 20.2Cornflower blue · ΔE 23.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.22, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E0D564
Analogous#64ADE0, #9764E0
Triadic#E0646F, #6FE064
Split complementary#E09764, #ADE064
Tetradic#E064AD, #E0D564, #64E097

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E4E5FA
Lighter +20%#B9BEF1
Lighter +10%#8F96E9
Darker −10%#3A48D7
Darker −20%#2532B9
Darker −30%#1D278E
Darker −40%#141B64
More saturated +25%#4D5CF7
Less saturated −25%#7B82C9

Channel breakdown

R100
G111
B224
Red100 (39.2%)
Green111 (43.5%)
Blue224 (87.8%)
Hue234.68°
Saturation (HSL)66.67%
Lightness63.53%
Dominant channelBlue
Hex per channelR 64 · G 6F · B E0

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Every value on this page was computed from “646fe0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.