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Recognised as Colour

#3D81E2

  • #3D81E2
  • Blue
  • Dark
  • Nearest: Dodgerblue

#3D81E2 is a blue with RGB values 61, 129, 226 and HSL 215°, 74%, 56%. It is a dark colour, so black text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#3D81E2#3D81E2
HEX#3D81E2
RGBrgb(61, 129, 226)
RGB (0–1)0.2392, 0.5059, 0.8863
RGB percentages23.9%, 50.6%, 88.6%
HSLhsl(215.3, 74%, 56.3%)
HSV / HSBhsv(215.3, 73%, 88.6%)
CMYK73%, 42.9%, 0%, 11.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,030,946
CSS custom property--colour: #3D81E2;

Brightness & contrast

Relative luminance0.22184WCAG 2.x, 0 is black and 1 is white
Perceived brightness129.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.44:1
Contrast with white3.86:1WCAG normal text: Fail
Contrast with black5.44:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#C27E1D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#518AE6no red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#337BE0no green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0098A6no blue cones; rare, and affects men and women equally; ΔE 55.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.86:1WCAG large text: AA
Contrast with black, large text5.44:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 9.5Cornflower blue · ΔE 10.1Royal blue · ΔE 19.1Medium purple · ΔE 26.2Slate blue · ΔE 26.5Steel blue · ΔE 27.9
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 9.46, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E29E3D
Analogous#3DD4E2, #4C3DE2
Triadic#E23D81, #81E23D
Split complementary#E24B3D, #D4E23D
Tetradic#E23DD3, #E29E3D, #3DE24B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EEF4FD
Lighter +30%#C2D7F6
Lighter +20%#96BBEF
Lighter +10%#699EE9
Darker −10%#1F67CD
Darker −20%#1850A1
Darker −30%#113A75
Darker −40%#0B2448
More saturated +25%#217CFE
Less saturated −25%#5986C6

Channel breakdown

R61
G129
B226
Red61 (23.9%)
Green129 (50.6%)
Blue226 (88.6%)
Hue215.27°
Saturation (HSL)73.99%
Lightness56.27%
Dominant channelBlue
Hex per channelR 3D · G 81 · B E2

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Every value on this page was computed from “3d81e2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.