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Recognised as Colour

#3C66BD

  • #3C66BD
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3C66BD is a blue with RGB values 60, 102, 189 and HSL 220°, 52%, 49%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3C66BD#3C66BD
HEX#3C66BD
RGBrgb(60, 102, 189)
RGB (0–1)0.2353, 0.4, 0.7412
RGB percentages23.5%, 40%, 74.1%
HSLhsl(220.5, 51.8%, 48.8%)
HSV / HSBhsv(220.5, 68.3%, 74.1%)
CMYK68.3%, 46%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,958,461
CSS custom property--colour: #3C66BD;

Brightness & contrast

Relative luminance0.14138WCAG 2.x, 0 is black and 1 is white
Perceived brightness106.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.49:1
Contrast with white5.49:1WCAG normal text: AA
Contrast with black3.83:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#C39942

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A6FC0no red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#2164BBno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#007A88no blue cones; rare, and affects men and women equally; ΔE 51 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.49:1WCAG large text: AAA
Contrast with black, large text3.83:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 18.2Royal blue · ΔE 19.5Dark slateblue · ΔE 19.6Dodgerblue · ΔE 20.5Slate blue · ΔE 22.9Medium purple · ΔE 24.7
Nearest named CSS colourCornflower blue (#6495ED)ΔE 18.25, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BD933C
Analogous#3CA6BD, #533CBD
Triadic#BD3C66, #66BD3C
Split complementary#BD533C, #A7BD3C
Tetradic#BD3CA6, #BD933C, #3CBD53

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D4DDF1
Lighter +30%#ADBFE5
Lighter +20%#86A1D9
Lighter +10%#6083CC
Darker −10%#305196
Darker −20%#233C70
Darker −30%#172749
Darker −40%#0B1222
More saturated +25%#1D5BDC
Less saturated −25%#5B719E

Channel breakdown

R60
G102
B189
Red60 (23.5%)
Green102 (40%)
Blue189 (74.1%)
Hue220.47°
Saturation (HSL)51.81%
Lightness48.82%
Dominant channelBlue
Hex per channelR 3C · G 66 · B BD

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Every value on this page was computed from “3c66bd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.