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Recognised as Colour

#3972AA

  • #3972AA
  • Blue
  • Dark
  • Nearest: Steel blue

#3972AA is a blue with RGB values 57, 114, 170 and HSL 210°, 50%, 45%. It is a dark colour, so white text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3972AA#3972AA
HEX#3972AA
RGBrgb(57, 114, 170)
RGB (0–1)0.2235, 0.4471, 0.6667
RGB percentages22.4%, 44.7%, 66.7%
HSLhsl(209.7, 49.8%, 44.5%)
HSV / HSBhsv(209.7, 66.5%, 66.7%)
CMYK66.5%, 32.9%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,764,906
CSS custom property--colour: #3972AA;

Brightness & contrast

Relative luminance0.15807WCAG 2.x, 0 is black and 1 is white
Perceived brightness109.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.05:1
Contrast with white5.05:1WCAG normal text: AA
Contrast with black4.16:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#C68D55

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5975ACno red cones; affects about 1% of men; ΔE 6.9 from the original
Deuteranopia#4A6AA9no green cones; the most common form, about 1% of men; ΔE 8.3 from the original
Tritanopia#007F86no blue cones; rare, and affects men and women equally; ΔE 34.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.05:1WCAG large text: AAA
Contrast with black, large text4.16:1WCAG large text: AA

Named colours

Steel blue · ΔE 7.6Cornflower blue · ΔE 22.8Slate grey · ΔE 25.7Light slate grey · ΔE 26.1Dark slateblue · ΔE 31.6Deep skyblue · ΔE 31.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.56, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA7139
Analogous#39AAA9, #393AAA
Triadic#AA3972, #72AA39
Split complementary#AA393A, #AAAA39
Tetradic#A939AA, #AA7139, #3AAA39

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4D8EB
Lighter +30%#9EBEDE
Lighter +20%#77A5D2
Lighter +10%#518CC5
Darker −10%#2C5884
Darker −20%#1F3F5E
Darker −30%#132537
Darker −40%#060C11
More saturated +25%#1D72C6
Less saturated −25%#55728E

Channel breakdown

R57
G114
B170
Red57 (22.4%)
Green114 (44.7%)
Blue170 (66.7%)
Hue209.73°
Saturation (HSL)49.78%
Lightness44.51%
Dominant channelBlue
Hex per channelR 39 · G 72 · B AA

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Every value on this page was computed from “3972aa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.