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Recognised as Colour

#3D55A4

  • #3D55A4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3D55A4 is a blue with RGB values 61, 85, 164 and HSL 226°, 46%, 44%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3D55A4#3D55A4
HEX#3D55A4
RGBrgb(61, 85, 164)
RGB (0–1)0.2392, 0.3333, 0.6431
RGB percentages23.9%, 33.3%, 64.3%
HSLhsl(226, 45.8%, 44.1%)
HSV / HSBhsv(226, 62.8%, 64.3%)
CMYK62.8%, 48.2%, 0%, 35.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,019,620
CSS custom property--colour: #3D55A4;

Brightness & contrast

Relative luminance0.10169WCAG 2.x, 0 is black and 1 is white
Perceived brightness91.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.92:1
Contrast with white6.92:1WCAG normal text: AA
Contrast with black3.03:1WCAG normal text: Fail
Greyscale equivalent#565656
Inverted#C2AA5B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2D5FA7no red cones; affects about 1% of men; ΔE 8.6 from the original
Deuteranopia#1B55A2no green cones; the most common form, about 1% of men; ΔE 6 from the original
Tritanopia#006774no blue cones; rare, and affects men and women equally; ΔE 48.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.92:1WCAG large text: AAA
Contrast with black, large text3.03:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 12.5Royal blue · ΔE 24Slate blue · ΔE 24.1Cornflower blue · ΔE 25.1Medium purple · ΔE 26.7Rebecca purple · ΔE 26.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 12.47, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A48C3D
Analogous#3D88A4, #593DA4
Triadic#A43D55, #55A43D
Split complementary#A4593D, #88A43D
Tetradic#A43D88, #A48C3D, #3DA459

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C4CDE9
Lighter +30%#9FADDB
Lighter +20%#7A8DCD
Lighter +10%#546DC0
Darker −10%#2F427F
Darker −20%#212E5A
Darker −30%#141B34
Darker −40%#06080F
More saturated +25%#2146C0
Less saturated −25%#596488

Channel breakdown

R61
G85
B164
Red61 (23.9%)
Green85 (33.3%)
Blue164 (64.3%)
Hue226.02°
Saturation (HSL)45.78%
Lightness44.12%
Dominant channelBlue
Hex per channelR 3D · G 55 · B A4

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Every value on this page was computed from “3d55a4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.