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Recognised as Colour

#0339B8

  • #0339B8
  • Blue
  • Dark
  • Nearest: Slate blue

#0339B8 is a blue with RGB values 3, 57, 184 and HSL 222°, 97%, 37%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#0339B8#0339B8
HEX#0339B8
RGBrgb(3, 57, 184)
RGB (0–1)0.0118, 0.2235, 0.7216
RGB percentages1.2%, 22.4%, 72.2%
HSLhsl(222.1, 96.8%, 36.7%)
HSV / HSBhsv(222.1, 98.4%, 72.2%)
CMYK98.4%, 69%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer211,384
CSS custom property--colour: #0339B8;

Brightness & contrast

Relative luminance0.06406WCAG 2.x, 0 is black and 1 is white
Perceived brightness76 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.21:1
Contrast with white9.21:1WCAG normal text: AAA
Contrast with black2.28:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#FCC647

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0050BCno red cones; affects about 1% of men; ΔE 17.1 from the original
Deuteranopia#0040B6no green cones; the most common form, about 1% of men; ΔE 6.7 from the original
Tritanopia#005D74no blue cones; rare, and affects men and women equally; ΔE 72.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.21:1WCAG large text: AAA
Contrast with black, large text2.28:1WCAG large text: Fail

Named colours

Slate blue · ΔE 19.4Dark blue · ΔE 20.6Navy · ΔE 21Royal blue · ΔE 21.1Medium slateblue · ΔE 22.6Rebecca purple · ΔE 23.8
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 19.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B88203
Analogous#0393B8, #2703B8
Triadic#B80339, #39B803
Split complementary#B82703, #94B803
Tetradic#B80394, #B88203, #03B828

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8AACFD
Lighter +30%#5889FC
Lighter +20%#2665FB
Lighter +10%#0449EA
Darker −10%#022986
Darker −20%#011A54
Darker −30%#010A21
Darker −40%#000000
More saturated +25%#0038BB
Less saturated −25%#1A42A1

Channel breakdown

R3
G57
B184
Red3 (1.2%)
Green57 (22.4%)
Blue184 (72.2%)
Hue222.1°
Saturation (HSL)96.79%
Lightness36.67%
Dominant channelBlue
Hex per channelR 03 · G 39 · B B8

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Every value on this page was computed from “0339b8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.