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Recognised as Colour

#3178EA

  • #3178EA
  • Blue
  • Dark
  • Nearest: Royal blue

#3178EA is a blue with RGB values 49, 120, 234 and HSL 217°, 81%, 55%. It is a dark colour, so black text on it reaches 5:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#3178EA#3178EA
HEX#3178EA
RGBrgb(49, 120, 234)
RGB (0–1)0.1922, 0.4706, 0.9176
RGB percentages19.2%, 47.1%, 91.8%
HSLhsl(217, 81.5%, 55.5%)
HSV / HSBhsv(217, 79.1%, 91.8%)
CMYK79.1%, 48.7%, 0%, 8.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,242,218
CSS custom property--colour: #3178EA;

Brightness & contrast

Relative luminance0.20026WCAG 2.x, 0 is black and 1 is white
Perceived brightness124.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.01:1
Contrast with white4.2:1WCAG normal text: Fail
Contrast with black5.01:1WCAG normal text: AA
Greyscale equivalent#717171
Inverted#CE8715

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3485EEno red cones; affects about 1% of men; ΔE 8.4 from the original
Deuteranopia#0074E8no green cones; the most common form, about 1% of men; ΔE 3 from the original
Tritanopia#0093A6no blue cones; rare, and affects men and women equally; ΔE 62.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.2:1WCAG large text: AA
Contrast with black, large text5.01:1WCAG large text: AAA

Named colours

Royal blue · ΔE 9.1Dodgerblue · ΔE 11.2Cornflower blue · ΔE 19.8Slate blue · ΔE 19.9Medium slateblue · ΔE 22.8Medium purple · ΔE 23.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 9.05, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EAA331
Analogous#31D5EA, #4631EA
Triadic#EA3178, #78EA31
Split complementary#EA4631, #D5EA31
Tetradic#EA31D5, #EAA331, #31EA46

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EAF1FD
Lighter +30%#BCD3F8
Lighter +20%#8EB5F3
Lighter +10%#5F96EF
Darker −10%#155ED3
Darker −20%#1149A4
Darker −30%#0C3576
Darker −40%#072048
More saturated +25%#1C73FF
Less saturated −25%#4D7FCE

Channel breakdown

R49
G120
B234
Red49 (19.2%)
Green120 (47.1%)
Blue234 (91.8%)
Hue216.97°
Saturation (HSL)81.5%
Lightness55.49%
Dominant channelBlue
Hex per channelR 31 · G 78 · B EA

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