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Colour

#646BC8

  • #646BC8
  • Blue
  • Dark
  • Nearest: Medium purple

#646BC8 is a blue with RGB values 100, 107, 200 and HSL 236°, 48%, 59%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Medium purple.

Colour values

#646BC8#646BC8
HEX#646BC8
RGBrgb(100, 107, 200)
RGB (0–1)0.3922, 0.4196, 0.7843
RGB percentages39.2%, 42%, 78.4%
HSLhsl(235.8, 47.6%, 58.8%)
HSV / HSBhsv(235.8, 50%, 78.4%)
CMYK50%, 46.5%, 0%, 21.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,581,192
CSS custom property--colour: #646BC8;

Brightness & contrast

Relative luminance0.17395WCAG 2.x, 0 is black and 1 is white
Perceived brightness119.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.69:1
Contrast with white4.69:1WCAG normal text: AA
Contrast with black4.48:1WCAG normal text: Fail
Greyscale equivalent#707070
Inverted#9B9437

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4378CBno red cones; affects about 1% of men; ΔE 13.7 from the original
Deuteranopia#3A70C6no green cones; the most common form, about 1% of men; ΔE 11.8 from the original
Tritanopia#3C7F90no blue cones; rare, and affects men and women equally; ΔE 51.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.69:1WCAG large text: AAA
Contrast with black, large text4.48:1WCAG large text: AA

Named colours

Medium purple · ΔE 15.3Slate blue · ΔE 16Royal blue · ΔE 16.2Cornflower blue · ΔE 18.9Dark slateblue · ΔE 19.6Dodgerblue · ΔE 21.8
Nearest named CSS colourMedium purple (#9370DB)ΔE 15.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C8C164
Analogous#649DC8, #8F64C8
Triadic#C8646B, #6BC864
Split complementary#C88F64, #9DC864
Tetradic#C8649D, #C8C164, #64C88F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFBFD
Lighter +30%#D5D7F0
Lighter +20%#AFB3E3
Lighter +10%#8A8FD5
Darker −10%#414AB8
Darker −20%#343A92
Darker −30%#272B6D
Darker −40%#191C47
More saturated +25%#4A54E2
Less saturated −25%#7E82AE

Channel breakdown

R100
G107
B200
Red100 (39.2%)
Green107 (42%)
Blue200 (78.4%)
Hue235.8°
Saturation (HSL)47.62%
Lightness58.82%
Dominant channelBlue
Hex per channelR 64 · G 6B · B C8

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Every value on this page was computed from “646bc8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.