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Recognised as Colour

#6655BC

  • #6655BC
  • Blue
  • Dark
  • Nearest: Slate blue

#6655BC is a blue with RGB values 102, 85, 188 and HSL 250°, 43%, 54%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#6655BC#6655BC
HEX#6655BC
RGBrgb(102, 85, 188)
RGB (0–1)0.4, 0.3333, 0.7373
RGB percentages40%, 33.3%, 73.7%
HSLhsl(249.9, 43.5%, 53.5%)
HSV / HSBhsv(249.9, 54.8%, 73.7%)
CMYK45.7%, 54.8%, 0%, 26.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,706,620
CSS custom property--colour: #6655BC;

Brightness & contrast

Relative luminance0.12953WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.85:1
Contrast with white5.85:1WCAG normal text: AA
Contrast with black3.59:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#99AA43

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1E67C0no red cones; affects about 1% of men; ΔE 21.8 from the original
Deuteranopia#1D62BAno green cones; the most common form, about 1% of men; ΔE 21 from the original
Tritanopia#4B6B80no blue cones; rare, and affects men and women equally; ΔE 53.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.85:1WCAG large text: AAA
Contrast with black, large text3.59:1WCAG large text: AA

Named colours

Slate blue · ΔE 6.8Medium purple · ΔE 13Rebecca purple · ΔE 14.7Royal blue · ΔE 15.6Dark slateblue · ΔE 17.1Medium slateblue · ΔE 18.1
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 6.83, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ABBC55
Analogous#5577BC, #9A55BC
Triadic#BC6655, #55BC66
Split complementary#BC9A55, #77BC55
Tetradic#BC5577, #ABBC55, #55BC9A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EAE7F6
Lighter +30%#C9C3E7
Lighter +20%#A89ED9
Lighter +10%#877ACA
Darker −10%#4F3F9F
Darker −20%#3D307B
Darker −30%#2B2256
Darker −40%#181431
More saturated +25%#5237DA
Less saturated −25%#7A739E

Channel breakdown

R102
G85
B188
Red102 (40%)
Green85 (33.3%)
Blue188 (73.7%)
Hue249.9°
Saturation (HSL)43.46%
Lightness53.53%
Dominant channelBlue
Hex per channelR 66 · G 55 · B BC

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Every value on this page was computed from “6655bc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.