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Colour

#3D66B2

  • #3D66B2
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3D66B2 is a blue with RGB values 61, 102, 178 and HSL 219°, 49%, 47%. It is a dark colour, so white text on it reaches 5.6:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3D66B2#3D66B2
HEX#3D66B2
RGBrgb(61, 102, 178)
RGB (0–1)0.2392, 0.4, 0.698
RGB percentages23.9%, 40%, 69.8%
HSLhsl(219, 49%, 46.9%)
HSV / HSBhsv(219, 65.7%, 69.8%)
CMYK65.7%, 42.7%, 0%, 30.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,023,986
CSS custom property--colour: #3D66B2;

Brightness & contrast

Relative luminance0.13709WCAG 2.x, 0 is black and 1 is white
Perceived brightness104.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.61:1
Contrast with white5.61:1WCAG normal text: AA
Contrast with black3.74:1WCAG normal text: Fail
Greyscale equivalent#636363
Inverted#C2994D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#436DB5no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#3063B0no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#007783no blue cones; rare, and affects men and women equally; ΔE 45.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.61:1WCAG large text: AAA
Contrast with black, large text3.74:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 18.7Dark slateblue · ΔE 20.3Steel blue · ΔE 21.2Dodgerblue · ΔE 24.3Royal blue · ΔE 26.1Slate blue · ΔE 28.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 18.73, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B2893D
Analogous#3DA0B2, #4F3DB2
Triadic#B23D66, #66B23D
Split complementary#B24F3D, #A0B23D
Tetradic#B23DA0, #B2893D, #3DB24F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDD9EE
Lighter +30%#A7BBE1
Lighter +20%#819ED4
Lighter +10%#5B81C7
Darker −10%#30508C
Darker −20%#233A66
Darker −30%#162540
Darker −40%#090F1A
More saturated +25%#1F5DD0
Less saturated −25%#5B6F94

Channel breakdown

R61
G102
B178
Red61 (23.9%)
Green102 (40%)
Blue178 (69.8%)
Hue218.97°
Saturation (HSL)48.95%
Lightness46.86%
Dominant channelBlue
Hex per channelR 3D · G 66 · B B2

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Every value on this page was computed from “3d66b2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.