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Recognised as Colour

#3973CC

  • #3973CC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3973CC is a blue with RGB values 57, 115, 204 and HSL 216°, 59%, 51%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3973CC#3973CC
HEX#3973CC
RGBrgb(57, 115, 204)
RGB (0–1)0.2235, 0.451, 0.8
RGB percentages22.4%, 45.1%, 80%
HSLhsl(216.3, 59%, 51.2%)
HSV / HSBhsv(216.3, 72.1%, 80%)
CMYK72.1%, 43.6%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,765,196
CSS custom property--colour: #3973CC;

Brightness & contrast

Relative luminance0.17491WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.67:1
Contrast with white4.67:1WCAG normal text: AA
Contrast with black4.5:1WCAG normal text: Fail
Greyscale equivalent#6D6D6D
Inverted#C68C33

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#477BCFno red cones; affects about 1% of men; ΔE 4.6 from the original
Deuteranopia#2C6ECAno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#008895no blue cones; rare, and affects men and women equally; ΔE 51.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.67:1WCAG large text: AAA
Contrast with black, large text4.5:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 13.4Dodgerblue · ΔE 15.8Royal blue · ΔE 20.3Steel blue · ΔE 25.1Dark slateblue · ΔE 25.2Slate blue · ΔE 25.8
Nearest named CSS colourCornflower blue (#6495ED)ΔE 13.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CC9239
Analogous#39BCCC, #4939CC
Triadic#CC3973, #73CC39
Split complementary#CC4939, #BCCC39
Tetradic#CC39BC, #CC9239, #39CC49

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBE6F6
Lighter +30%#B3C9EB
Lighter +20%#8AACE1
Lighter +10%#6290D6
Darker −10%#2B5CA7
Darker −20%#21467E
Darker −30%#162F56
Darker −40%#0C192D
More saturated +25%#1A6CEB
Less saturated −25%#587AAD

Channel breakdown

R57
G115
B204
Red57 (22.4%)
Green115 (45.1%)
Blue204 (80%)
Hue216.33°
Saturation (HSL)59.04%
Lightness51.18%
Dominant channelBlue
Hex per channelR 39 · G 73 · B CC

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Every value on this page was computed from “3973cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.