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Recognised as Colour

#3691CE

  • #3691CE
  • Blue
  • Dark
  • Nearest: Steel blue

#3691CE is a blue with RGB values 54, 145, 206 and HSL 204°, 61%, 51%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3691CE#3691CE
HEX#3691CE
RGBrgb(54, 145, 206)
RGB (0–1)0.2118, 0.5686, 0.8078
RGB percentages21.2%, 56.9%, 80.8%
HSLhsl(204.1, 60.8%, 51%)
HSV / HSBhsv(204.1, 73.8%, 80.8%)
CMYK73.8%, 29.6%, 0%, 19.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,576,270
CSS custom property--colour: #3691CE;

Brightness & contrast

Relative luminance0.25491WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.1:1
Contrast with white3.44:1WCAG normal text: Fail
Contrast with black6.1:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#C96E31

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7592D1no red cones; affects about 1% of men; ΔE 13.6 from the original
Deuteranopia#6084CDno green cones; the most common form, about 1% of men; ΔE 15.1 from the original
Tritanopia#00A0A6no blue cones; rare, and affects men and women equally; ΔE 36.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.44:1WCAG large text: AA
Contrast with black, large text6.1:1WCAG large text: AAA

Named colours

Steel blue · ΔE 8.9Deep skyblue · ΔE 19.1Cornflower blue · ΔE 19.3Light skyblue · ΔE 24.9Light slate grey · ΔE 28.3Slate grey · ΔE 29.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 8.85, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CE7336
Analogous#36CEBF, #3645CE
Triadic#CE3691, #91CE36
Split complementary#CE3645, #CEBF36
Tetradic#BF36CE, #CE7336, #45CE36

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAEBF6
Lighter +30%#B1D4EC
Lighter +20%#88BEE2
Lighter +10%#5FA7D8
Darker −10%#2975A8
Darker −20%#1F587F
Darker −30%#153C56
Darker −40%#0B1F2D
More saturated +25%#1797ED
Less saturated −25%#558BAF

Channel breakdown

R54
G145
B206
Red54 (21.2%)
Green145 (56.9%)
Blue206 (80.8%)
Hue204.08°
Saturation (HSL)60.8%
Lightness50.98%
Dominant channelBlue
Hex per channelR 36 · G 91 · B CE

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Every value on this page was computed from “3691ce” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.