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Recognised as Colour

#0031CF

  • #0031CF
  • Blue
  • Dark
  • Nearest: Medium blue

#0031CF is a blue with RGB values 0, 49, 207 and HSL 226°, 100%, 41%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#0031CF#0031CF
HEX#0031CF
RGBrgb(0, 49, 207)
RGB (0–1)0, 0.1922, 0.8118
RGB percentages0%, 19.2%, 81.2%
HSLhsl(225.8, 100%, 40.6%)
HSV / HSBhsv(225.8, 100%, 81.2%)
CMYK100%, 76.3%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer12,751
CSS custom property--colour: #0031CF;

Brightness & contrast

Relative luminance0.06702WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.97:1
Contrast with white8.97:1WCAG normal text: AAA
Contrast with black2.34:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#FFCE30

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0053D4no red cones; affects about 1% of men; ΔE 23.7 from the original
Deuteranopia#003FCCno green cones; the most common form, about 1% of men; ΔE 11.6 from the original
Tritanopia#00617Fno blue cones; rare, and affects men and women equally; ΔE 86.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.97:1WCAG large text: AAA
Contrast with black, large text2.34:1WCAG large text: Fail

Named colours

Medium blue · ΔE 20.2Dark blue · ΔE 21.4Blue violet · ΔE 23.8Navy · ΔE 25.5Medium slateblue · ΔE 28.6Dark orchid · ΔE 29.5
Nearest named CSS colourMedium blue (#0000CD)ΔE 20.19, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF9E00
Analogous#0098CF, #3600CF
Triadic#CF0031, #31CF00
Split complementary#CF3700, #98CF00
Tetradic#CF0099, #CF9E00, #00CF37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9CB3FF
Lighter +30%#698DFF
Lighter +20%#3666FF
Lighter +10%#033FFF
Darker −10%#00259C
Darker −20%#001969
Darker −30%#000D36
Darker −40%#000103
More saturated +25%#0031CF
Less saturated −25%#1A3FB5

Channel breakdown

R0
G49
B207
Red0 (0%)
Green49 (19.2%)
Blue207 (81.2%)
Hue225.8°
Saturation (HSL)100%
Lightness40.59%
Dominant channelBlue
Hex per channelR 00 · G 31 · B CF

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Every value on this page was computed from “0031cf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.