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Recognised as Colour

#6640F5

  • #6640F5
  • Blue
  • Dark
  • Nearest: Blue violet

#6640F5 is a blue with RGB values 102, 64, 245 and HSL 253°, 90%, 61%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Blue violet.

Colour values

#6640F5#6640F5
HEX#6640F5
RGBrgb(102, 64, 245)
RGB (0–1)0.4, 0.251, 0.9608
RGB percentages40%, 25.1%, 96.1%
HSLhsl(252.6, 90%, 60.6%)
HSV / HSBhsv(252.6, 73.9%, 96.1%)
CMYK58.4%, 73.9%, 0%, 3.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,701,301
CSS custom property--colour: #6640F5;

Brightness & contrast

Relative luminance0.13084WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.81:1
Contrast with white5.81:1WCAG normal text: AA
Contrast with black3.62:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#99BF0A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006BFAno red cones; affects about 1% of men; ΔE 32.4 from the original
Deuteranopia#005FF2no green cones; the most common form, about 1% of men; ΔE 27.1 from the original
Tritanopia#007398no blue cones; rare, and affects men and women equally; ΔE 93.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.81:1WCAG large text: AAA
Contrast with black, large text3.62:1WCAG large text: AA

Named colours

Blue violet · ΔE 13Medium blue · ΔE 20.1Dark violet · ΔE 20.9Dark orchid · ΔE 24.7Medium slateblue · ΔE 29.3Blue · ΔE 31.3
Nearest named CSS colourBlue violet (#8A2BE2)ΔE 13, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CFF540
Analogous#4075F5, #C040F5
Triadic#F56640, #40F566
Split complementary#F5C040, #75F540
Tetradic#F54075, #CFF540, #40F5C0

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DAD1FD
Lighter +20%#B4A1FA
Lighter +10%#8D70F8
Darker −10%#3F10F2
Darker −20%#310AC5
Darker −30%#250894
Darker −40%#190564
More saturated +25%#6036FF
Less saturated −25%#7559DC

Channel breakdown

R102
G64
B245
Red102 (40%)
Green64 (25.1%)
Blue245 (96.1%)
Hue252.6°
Saturation (HSL)90.05%
Lightness60.59%
Dominant channelBlue
Hex per channelR 66 · G 40 · B F5

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Every value on this page was computed from “6640f5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.