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Colour

#664CE6

  • #664CE6
  • Blue
  • Dark
  • Nearest: Medium slateblue

#664CE6 is a blue with RGB values 102, 76, 230 and HSL 250°, 75%, 60%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#664CE6#664CE6
HEX#664CE6
RGBrgb(102, 76, 230)
RGB (0–1)0.4, 0.298, 0.902
RGB percentages40%, 29.8%, 90.2%
HSLhsl(250.1, 75.5%, 60%)
HSV / HSBhsv(250.1, 67%, 90.2%)
CMYK55.7%, 67%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,704,358
CSS custom property--colour: #664CE6;

Brightness & contrast

Relative luminance0.13707WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.61:1
Contrast with white5.61:1WCAG normal text: AA
Contrast with black3.74:1WCAG normal text: Fail
Greyscale equivalent#5D5D5D
Inverted#99B319

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006CEBno red cones; affects about 1% of men; ΔE 27.7 from the original
Deuteranopia#0062E3no green cones; the most common form, about 1% of men; ΔE 24 from the original
Tritanopia#267493no blue cones; rare, and affects men and women equally; ΔE 81.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.61:1WCAG large text: AAA
Contrast with black, large text3.74:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 15.7Blue violet · ΔE 19.1Dark orchid · ΔE 20.4Slate blue · ΔE 22.4Dark violet · ΔE 26.2Royal blue · ΔE 26.5
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 15.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CCE64C
Analogous#4C7FE6, #B34CE6
Triadic#E6664C, #4CE666
Split complementary#E6B34C, #7FE64C
Tetradic#E64C7F, #CCE64C, #4CE6B3

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D9D2F9
Lighter +20%#B3A6F3
Lighter +10%#8C79EC
Darker −10%#401FE0
Darker −20%#3319B3
Darker −30%#261386
Darker −40%#1A0C5A
More saturated +25%#5533FF
Less saturated −25%#7765CD

Channel breakdown

R102
G76
B230
Red102 (40%)
Green76 (29.8%)
Blue230 (90.2%)
Hue250.13°
Saturation (HSL)75.49%
Lightness60%
Dominant channelBlue
Hex per channelR 66 · G 4C · B E6

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Every value on this page was computed from “664ce6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.