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Colour

#2100CD

  • #2100CD
  • Blue
  • Dark
  • Nearest: Medium blue

#2100CD is a blue with RGB values 33, 0, 205 and HSL 250°, 100%, 40%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#2100CD#2100CD
HEX#2100CD
RGBrgb(33, 0, 205)
RGB (0–1)0.1294, 0, 0.8039
RGB percentages12.9%, 0%, 80.4%
HSLhsl(249.7, 100%, 40.2%)
HSV / HSBhsv(249.7, 100%, 80.4%)
CMYK83.9%, 100%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,162,893
CSS custom property--colour: #2100CD;

Brightness & contrast

Relative luminance0.04731WCAG 2.x, 0 is black and 1 is white
Perceived brightness71.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.79:1
Contrast with white10.79:1WCAG normal text: AAA
Contrast with black1.95:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#DEFF32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0047D2no red cones; affects about 1% of men; ΔE 34.4 from the original
Deuteranopia#0033CAno green cones; the most common form, about 1% of men; ΔE 23.1 from the original
Tritanopia#005477no blue cones; rare, and affects men and women equally; ΔE 99.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.79:1WCAG large text: AAA
Contrast with black, large text1.95:1WCAG large text: Fail

Named colours

Medium blue · ΔE 2Blue violet · ΔE 22.3Blue · ΔE 22.4Dark violet · ΔE 25.4Dark blue · ΔE 29.4Dark orchid · ΔE 34.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 1.95, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ACCD00
Analogous#0046CD, #8700CD
Triadic#CD2100, #00CD21
Split complementary#CD8700, #46CD00
Tetradic#CD0046, #ACCD00, #00CD87

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AA9AFF
Lighter +30%#7F67FF
Lighter +20%#5534FF
Lighter +10%#2A01FF
Darker −10%#19009A
Darker −20%#110067
Darker −30%#080034
Darker −40%#000001
More saturated +25%#2100CD
Less saturated −25%#321AB3

Channel breakdown

R33
G0
B205
Red33 (12.9%)
Green0 (0%)
Blue205 (80.4%)
Hue249.66°
Saturation (HSL)100%
Lightness40.2%
Dominant channelBlue
Hex per channelR 21 · G 00 · B CD

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Every value on this page was computed from “2100cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.