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Recognised as Colour

#3363B4

  • #3363B4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#3363B4 is a blue with RGB values 51, 99, 180 and HSL 218°, 56%, 45%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#3363B4#3363B4
HEX#3363B4
RGBrgb(51, 99, 180)
RGB (0–1)0.2, 0.3882, 0.7059
RGB percentages20%, 38.8%, 70.6%
HSLhsl(217.7, 55.8%, 45.3%)
HSV / HSBhsv(217.7, 71.7%, 70.6%)
CMYK71.7%, 45%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,367,860
CSS custom property--colour: #3363B4;

Brightness & contrast

Relative luminance0.12923WCAG 2.x, 0 is black and 1 is white
Perceived brightness101.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.86:1
Contrast with white5.86:1WCAG normal text: AA
Contrast with black3.58:1WCAG normal text: Fail
Greyscale equivalent#5F5F5F
Inverted#CC9C4B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A6BB7no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#215FB2no green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#007683no blue cones; rare, and affects men and women equally; ΔE 47.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.86:1WCAG large text: AAA
Contrast with black, large text3.58:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.5Cornflower blue · ΔE 19.5Dodgerblue · ΔE 22.9Royal blue · ΔE 23.4Steel blue · ΔE 24.2Slate blue · ΔE 26.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B48433
Analogous#33A3B4, #4433B4
Triadic#B43363, #63B433
Split complementary#B44433, #A3B433
Tetradic#B433A3, #B48433, #33B444

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5D4EE
Lighter +30%#9DB7E3
Lighter +20%#759AD8
Lighter +10%#4D7DCD
Darker −10%#284D8C
Darker −20%#1C3765
Darker −30%#11213D
Darker −40%#060C15
More saturated +25%#165CD1
Less saturated −25%#506A97

Channel breakdown

R51
G99
B180
Red51 (20%)
Green99 (38.8%)
Blue180 (70.6%)
Hue217.67°
Saturation (HSL)55.84%
Lightness45.29%
Dominant channelBlue
Hex per channelR 33 · G 63 · B B4

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Every value on this page was computed from “3363b4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.