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Colour

#3664B0

  • #3664B0
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3664B0 is a blue with RGB values 54, 100, 176 and HSL 217°, 53%, 45%. It is a dark colour, so white text on it reaches 5.8:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3664B0#3664B0
HEX#3664B0
RGBrgb(54, 100, 176)
RGB (0–1)0.2118, 0.3922, 0.6902
RGB percentages21.2%, 39.2%, 69%
HSLhsl(217.4, 53%, 45.1%)
HSV / HSBhsv(217.4, 69.3%, 69%)
CMYK69.3%, 43.2%, 0%, 31%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,564,720
CSS custom property--colour: #3664B0;

Brightness & contrast

Relative luminance0.13033WCAG 2.x, 0 is black and 1 is white
Perceived brightness101.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.82:1
Contrast with white5.82:1WCAG normal text: AA
Contrast with black3.61:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#C99B4F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#406BB3no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#2B60AEno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#007681no blue cones; rare, and affects men and women equally; ΔE 45.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.82:1WCAG large text: AAA
Contrast with black, large text3.61:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 19.6Dark slateblue · ΔE 20.3Steel blue · ΔE 21.4Dodgerblue · ΔE 24.6Royal blue · ΔE 26.3Slate blue · ΔE 29
Nearest named CSS colourCornflower blue (#6495ED)ΔE 19.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B08236
Analogous#36A1B0, #4536B0
Triadic#B03664, #64B036
Split complementary#B04536, #A1B036
Tetradic#B036A1, #B08236, #36B045

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5D4ED
Lighter +30%#9EB7E1
Lighter +20%#779AD5
Lighter +10%#507EC9
Darker −10%#2A4E89
Darker −20%#1E3862
Darker −30%#12213B
Darker −40%#060B14
More saturated +25%#195DCD
Less saturated −25%#536B93

Channel breakdown

R54
G100
B176
Red54 (21.2%)
Green100 (39.2%)
Blue176 (69%)
Hue217.38°
Saturation (HSL)53.04%
Lightness45.1%
Dominant channelBlue
Hex per channelR 36 · G 64 · B B0

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Every value on this page was computed from “3664b0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.