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Recognised as Colour

#0311CC

  • #0311CC
  • Blue
  • Dark
  • Nearest: Medium blue

#0311CC is a blue with RGB values 3, 17, 204 and HSL 236°, 97%, 41%. It is a dark colour, so white text on it reaches 10.7:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#0311CC#0311CC
HEX#0311CC
RGBrgb(3, 17, 204)
RGB (0–1)0.0118, 0.0667, 0.8
RGB percentages1.2%, 6.7%, 80%
HSLhsl(235.8, 97.1%, 40.6%)
HSV / HSBhsv(235.8, 98.5%, 80%)
CMYK98.5%, 91.7%, 0%, 20%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer201,164
CSS custom property--colour: #0311CC;

Brightness & contrast

Relative luminance0.0478WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.74:1
Contrast with white10.74:1WCAG normal text: AAA
Contrast with black1.96:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#FCEE33

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0048D1no red cones; affects about 1% of men; ΔE 31.6 from the original
Deuteranopia#0033C9no green cones; the most common form, about 1% of men; ΔE 19.4 from the original
Tritanopia#005778no blue cones; rare, and affects men and women equally; ΔE 97.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.74:1WCAG large text: AAA
Contrast with black, large text1.96:1WCAG large text: Fail

Named colours

Medium blue · ΔE 4.8Blue violet · ΔE 22.5Blue · ΔE 25.5Dark violet · ΔE 26.5Dark blue · ΔE 26.6Navy · ΔE 31.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 4.81, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CCBE03
Analogous#0375CC, #5A03CC
Triadic#CC0311, #11CC03
Split complementary#CC5A03, #75CC03
Tetradic#CC0375, #CCBE03, #03CC5A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9DA4FE
Lighter +30%#6B75FD
Lighter +20%#3947FC
Lighter +10%#0718FB
Darker −10%#020D9A
Darker −20%#020967
Darker −30%#010435
Darker −40%#000003
More saturated +25%#000ECF
Less saturated −25%#1D27B2

Channel breakdown

R3
G17
B204
Red3 (1.2%)
Green17 (6.7%)
Blue204 (80%)
Hue235.82°
Saturation (HSL)97.1%
Lightness40.59%
Dominant channelBlue
Hex per channelR 03 · G 11 · B CC

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Every value on this page was computed from “0311cc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.