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Recognised as Colour

#3766B0

  • #3766B0
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3766B0 is a blue with RGB values 55, 102, 176 and HSL 217°, 52%, 45%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3766B0#3766B0
HEX#3766B0
RGBrgb(55, 102, 176)
RGB (0–1)0.2157, 0.4, 0.6902
RGB percentages21.6%, 40%, 69%
HSLhsl(216.7, 52.4%, 45.3%)
HSV / HSBhsv(216.7, 68.8%, 69%)
CMYK68.8%, 42%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,630,768
CSS custom property--colour: #3766B0;

Brightness & contrast

Relative luminance0.1345WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.69:1
Contrast with white5.69:1WCAG normal text: AA
Contrast with black3.69:1WCAG normal text: Fail
Greyscale equivalent#616161
Inverted#C8994F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#436DB3no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#3061AEno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#007782no blue cones; rare, and affects men and women equally; ΔE 44.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.69:1WCAG large text: AAA
Contrast with black, large text3.69:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 19.2Steel blue · ΔE 19.8Dark slateblue · ΔE 21.4Dodgerblue · ΔE 25Royal blue · ΔE 27.7Slate blue · ΔE 30.4
Nearest named CSS colourCornflower blue (#6495ED)ΔE 19.2, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B08137
Analogous#37A2B0, #4537B0
Triadic#B03766, #66B037
Split complementary#B04537, #A3B037
Tetradic#B037A2, #B08137, #37B045

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C6D5ED
Lighter +30%#9FB9E1
Lighter +20%#789CD5
Lighter +10%#5180C9
Darker −10%#2B4F89
Darker −20%#1F3962
Darker −30%#13223B
Darker −40%#060C15
More saturated +25%#1A60CD
Less saturated −25%#546C93

Channel breakdown

R55
G102
B176
Red55 (21.6%)
Green102 (40%)
Blue176 (69%)
Hue216.69°
Saturation (HSL)52.38%
Lightness45.29%
Dominant channelBlue
Hex per channelR 37 · G 66 · B B0

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Every value on this page was computed from “3766b0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.