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Colour

#3183D2

  • #3183D2
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3183D2 is a blue with RGB values 49, 131, 210 and HSL 209°, 64%, 51%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3183D2#3183D2
HEX#3183D2
RGBrgb(49, 131, 210)
RGB (0–1)0.1922, 0.5137, 0.8235
RGB percentages19.2%, 51.4%, 82.4%
HSLhsl(209.4, 64.1%, 50.8%)
HSV / HSBhsv(209.4, 76.7%, 82.4%)
CMYK76.7%, 37.6%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,245,010
CSS custom property--colour: #3183D2;

Brightness & contrast

Relative luminance0.21539WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.31:1
Contrast with white3.96:1WCAG normal text: Fail
Contrast with black5.31:1WCAG normal text: AA
Greyscale equivalent#777777
Inverted#CE7C2D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5E88D5no red cones; affects about 1% of men; ΔE 7.4 from the original
Deuteranopia#4579D0no green cones; the most common form, about 1% of men; ΔE 8.8 from the original
Tritanopia#0096A0no blue cones; rare, and affects men and women equally; ΔE 45.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.96:1WCAG large text: AA
Contrast with black, large text5.31:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.9Steel blue · ΔE 16.9Dodgerblue · ΔE 18.3Deep skyblue · ΔE 28.3Royal blue · ΔE 30Dark slateblue · ΔE 33.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.87, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D28031
Analogous#31D2D1, #3132D2
Triadic#D23183, #83D231
Split complementary#D23132, #D2D131
Tetradic#D131D2, #D28031, #32D231

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D8E8F7
Lighter +30%#AFCFED
Lighter +20%#85B5E4
Lighter +10%#5B9CDB
Darker −10%#2569AB
Darker −20%#1C4F81
Darker −30%#133657
Darker −40%#0A1C2D
More saturated +25%#1284F1
Less saturated −25%#5082B3

Channel breakdown

R49
G131
B210
Red49 (19.2%)
Green131 (51.4%)
Blue210 (82.4%)
Hue209.44°
Saturation (HSL)64.14%
Lightness50.78%
Dominant channelBlue
Hex per channelR 31 · G 83 · B D2

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Every value on this page was computed from “3183d2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.