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Recognised as Colour

#3F3BCC

  • #3F3BCC
  • Blue
  • Dark
  • Nearest: Medium slateblue

#3F3BCC is a blue with RGB values 63, 59, 204 and HSL 242°, 59%, 52%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#3F3BCC#3F3BCC
HEX#3F3BCC
RGBrgb(63, 59, 204)
RGB (0–1)0.2471, 0.2314, 0.8
RGB percentages24.7%, 23.1%, 80%
HSLhsl(241.7, 58.7%, 51.6%)
HSV / HSBhsv(241.7, 71.1%, 80%)
CMYK69.1%, 71.1%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,144,076
CSS custom property--colour: #3F3BCC;

Brightness & contrast

Relative luminance0.08544WCAG 2.x, 0 is black and 1 is white
Perceived brightness89.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.75:1
Contrast with white7.75:1WCAG normal text: AAA
Contrast with black2.71:1WCAG normal text: Fail
Greyscale equivalent#464646
Inverted#C0C433

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0059D0no red cones; affects about 1% of men; ΔE 23.4 from the original
Deuteranopia#004CC9no green cones; the most common form, about 1% of men; ΔE 16.5 from the original
Tritanopia#00637Fno blue cones; rare, and affects men and women equally; ΔE 79.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.75:1WCAG large text: AAA
Contrast with black, large text2.71:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 20Dark blue · ΔE 21.3Slate blue · ΔE 22.1Blue violet · ΔE 23.9Navy · ΔE 24Dark orchid · ΔE 24.3
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.03, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C8CC3B
Analogous#3B7FCC, #883BCC
Triadic#CC3F3B, #3BCC3F
Split complementary#CC883B, #7FCC3B
Tetradic#CC3B7F, #C8CC3B, #3BCC88

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEDDF6
Lighter +30%#B6B4EC
Lighter +20%#8E8CE1
Lighter +10%#6763D7
Darker −10%#2F2CA8
Darker −20%#242180
Darker −30%#181757
Darker −40%#0D0C2F
More saturated +25%#221CEB
Less saturated −25%#5C5AAD

Channel breakdown

R63
G59
B204
Red63 (24.7%)
Green59 (23.1%)
Blue204 (80%)
Hue241.66°
Saturation (HSL)58.7%
Lightness51.57%
Dominant channelBlue
Hex per channelR 3F · G 3B · B CC

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Every value on this page was computed from “3f3bcc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.