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Colour

#3D63A3

  • #3D63A3
  • Blue
  • Dark
  • Nearest: Steel blue

#3D63A3 is a blue with RGB values 61, 99, 163 and HSL 218°, 46%, 44%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#3D63A3#3D63A3
HEX#3D63A3
RGBrgb(61, 99, 163)
RGB (0–1)0.2392, 0.3882, 0.6392
RGB percentages23.9%, 38.8%, 63.9%
HSLhsl(217.6, 45.5%, 43.9%)
HSV / HSBhsv(217.6, 62.6%, 63.9%)
CMYK62.6%, 39.3%, 0%, 36.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,023,203
CSS custom property--colour: #3D63A3;

Brightness & contrast

Relative luminance0.1256WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.98:1
Contrast with white5.98:1WCAG normal text: AA
Contrast with black3.51:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#C29C5C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4768A6no red cones; affects about 1% of men; ΔE 2.7 from the original
Deuteranopia#395FA2no green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#00717Bno blue cones; rare, and affects men and women equally; ΔE 39.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.98:1WCAG large text: AAA
Contrast with black, large text3.51:1WCAG large text: AA

Named colours

Steel blue · ΔE 16.6Dark slateblue · ΔE 22.2Cornflower blue · ΔE 22.6Dodgerblue · ΔE 30.3Slate grey · ΔE 31.5Light slate grey · ΔE 32.2
Nearest named CSS colourSteel blue (#4682B4)ΔE 16.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A37D3D
Analogous#3D96A3, #4A3DA3
Triadic#A33D63, #63A33D
Split complementary#A34A3D, #96A33D
Tetradic#A33D96, #A37D3D, #3DA34A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3D1E9
Lighter +30%#9EB5DB
Lighter +20%#7998CD
Lighter +10%#547CBF
Darker −10%#2F4C7E
Darker −20%#213659
Darker −30%#131F34
Darker −40%#05090F
More saturated +25%#215CBF
Less saturated −25%#596A87

Channel breakdown

R61
G99
B163
Red61 (23.9%)
Green99 (38.8%)
Blue163 (63.9%)
Hue217.65°
Saturation (HSL)45.54%
Lightness43.92%
Dominant channelBlue
Hex per channelR 3D · G 63 · B A3

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Every value on this page was computed from “3d63a3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.