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Recognised as Colour

#3178AE

  • #3178AE
  • Blue
  • Dark
  • Nearest: Steel blue

#3178AE is a blue with RGB values 49, 120, 174 and HSL 206°, 56%, 44%. It is a dark colour, so white text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3178AE#3178AE
HEX#3178AE
RGBrgb(49, 120, 174)
RGB (0–1)0.1922, 0.4706, 0.6824
RGB percentages19.2%, 47.1%, 68.2%
HSLhsl(205.9, 56.1%, 43.7%)
HSV / HSBhsv(205.9, 71.8%, 68.2%)
CMYK71.8%, 31%, 0%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,242,158
CSS custom property--colour: #3178AE;

Brightness & contrast

Relative luminance0.17142WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.74:1
Contrast with white4.74:1WCAG normal text: AA
Contrast with black4.43:1WCAG normal text: Fail
Greyscale equivalent#6D6D6D
Inverted#CE8751

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5F7AB0no red cones; affects about 1% of men; ΔE 10 from the original
Deuteranopia#4E6EADno green cones; the most common form, about 1% of men; ΔE 11.5 from the original
Tritanopia#00858Bno blue cones; rare, and affects men and women equally; ΔE 33.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.74:1WCAG large text: AAA
Contrast with black, large text4.43:1WCAG large text: AA

Named colours

Steel blue · ΔE 5Cornflower blue · ΔE 23.6Slate grey · ΔE 25Light slate grey · ΔE 25.2Deep skyblue · ΔE 28.8Light skyblue · ΔE 32.7
Nearest named CSS colourSteel blue (#4682B4)ΔE 4.97, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AE6731
Analogous#31AEA5, #313AAE
Triadic#AE3178, #78AE31
Split complementary#AE313A, #AEA531
Tetradic#A531AE, #AE6731, #3AAE31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BED9ED
Lighter +30%#96C1E2
Lighter +20%#6FAAD6
Lighter +10%#4792CB
Darker −10%#265D86
Darker −20%#1B415E
Darker −30%#0F2637
Darker −40%#040A0F
More saturated +25%#157CCA
Less saturated −25%#4D7492

Channel breakdown

R49
G120
B174
Red49 (19.2%)
Green120 (47.1%)
Blue174 (68.2%)
Hue205.92°
Saturation (HSL)56.05%
Lightness43.73%
Dominant channelBlue
Hex per channelR 31 · G 78 · B AE

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Every value on this page was computed from “3178ae” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.