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Recognised as Colour

#2121C6

  • #2121C6
  • Blue
  • Dark
  • Nearest: Medium blue

#2121C6 is a blue with RGB values 33, 33, 198 and HSL 240°, 71%, 45%. It is a dark colour, so white text on it reaches 10:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#2121C6#2121C6
HEX#2121C6
RGBrgb(33, 33, 198)
RGB (0–1)0.1294, 0.1294, 0.7765
RGB percentages12.9%, 12.9%, 77.6%
HSLhsl(240, 71.4%, 45.3%)
HSV / HSBhsv(240, 83.3%, 77.6%)
CMYK83.3%, 83.3%, 0%, 22.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,171,334
CSS custom property--colour: #2121C6;

Brightness & contrast

Relative luminance0.05488WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.01:1
Contrast with white10.01:1WCAG normal text: AAA
Contrast with black2.1:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#DEDE39

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004BCAno red cones; affects about 1% of men; ΔE 28 from the original
Deuteranopia#0039C3no green cones; the most common form, about 1% of men; ΔE 17.2 from the original
Tritanopia#005776no blue cones; rare, and affects men and women equally; ΔE 88.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.01:1WCAG large text: AAA
Contrast with black, large text2.1:1WCAG large text: Fail

Named colours

Medium blue · ΔE 14.7Dark blue · ΔE 19.9Blue violet · ΔE 20.9Navy · ΔE 24.7Dark violet · ΔE 25.9Dark orchid · ΔE 28.3
Nearest named CSS colourMedium blue (#0000CD)ΔE 14.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C6C621
Analogous#2174C6, #7421C6
Triadic#C62121, #21C621
Split complementary#C67421, #74C621
Tetradic#C62174, #C6C621, #21C674

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BFBFF4
Lighter +30%#9393ED
Lighter +20%#6767E6
Lighter +10%#3C3CDE
Darker −10%#1A1A9A
Darker −20%#12126F
Darker −30%#0B0B43
Darker −40%#040417
More saturated +25%#0404E3
Less saturated −25%#3E3EA9

Channel breakdown

R33
G33
B198
Red33 (12.9%)
Green33 (12.9%)
Blue198 (77.6%)
Hue240°
Saturation (HSL)71.43%
Lightness45.29%
Dominant channelBlue
Hex per channelR 21 · G 21 · B C6

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Every value on this page was computed from “2121c6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.