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Colour

#0000CD

  • #0000CD
  • Blue
  • Dark
  • Named: Medium blue

#0000CD is the CSS colour blue with RGB values 0, 0, 205 and HSL 240°, 100%, 40%. It is a dark colour, so white text on it reaches 11.2:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#0000CD#0000CD
HEX#0000CD
RGBrgb(0, 0, 205)
RGB (0–1)0, 0, 0.8039
RGB percentages0%, 0%, 80.4%
HSLhsl(240, 100%, 40.2%)
HSV / HSBhsv(240, 100%, 80.4%)
CMYK100%, 100%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer205
CSS custom property--colour: #0000CD;

Brightness & contrast

Relative luminance0.04408WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.16:1
Contrast with white11.16:1WCAG normal text: AAA
Contrast with black1.88:1WCAG normal text: Fail
Greyscale equivalent#0F0F0F
Inverted#FFFF32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0046D2no red cones; affects about 1% of men; ΔE 34.4 from the original
Deuteranopia#002FCAno green cones; the most common form, about 1% of men; ΔE 21 from the original
Tritanopia#005577no blue cones; rare, and affects men and women equally; ΔE 100.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.16:1WCAG large text: AAA
Contrast with black, large text1.88:1WCAG large text: Fail

Named colours

Medium blue · ΔE 0Blue · ΔE 21.6Blue violet · ΔE 24.2Dark violet · ΔE 27.3Dark blue · ΔE 30.1Navy · ΔE 35.3
This is a named CSS colourMedium blue (#0000CD)exact match
Hue familyblue
CSS keyword usablemediumblue

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CDCD00
Analogous#0067CD, #6700CD
Triadic#CD0000, #00CD00
Split complementary#CD6700, #67CD00
Tetradic#CD0067, #CDCD00, #00CD67

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9A9AFF
Lighter +30%#6767FF
Lighter +20%#3434FF
Lighter +10%#0101FF
Darker −10%#00009A
Darker −20%#000067
Darker −30%#000034
Darker −40%#000001
More saturated +25%#0000CD
Less saturated −25%#1A1AB3

Channel breakdown

R0
G0
B205
Red0 (0%)
Green0 (0%)
Blue205 (80.4%)
Hue240°
Saturation (HSL)100%
Lightness40.2%
Dominant channelBlue
Hex per channelR 00 · G 00 · B CD

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Every value on this page was computed from “0000cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.