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Recognised as Colour

#2109DD

  • #2109DD
  • Blue
  • Dark
  • Nearest: Medium blue

#2109DD is a blue with RGB values 33, 9, 221 and HSL 247°, 92%, 45%. It is a dark colour, so white text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#2109DD#2109DD
HEX#2109DD
RGBrgb(33, 9, 221)
RGB (0–1)0.1294, 0.0353, 0.8667
RGB percentages12.9%, 3.5%, 86.7%
HSLhsl(246.8, 92.2%, 45.1%)
HSV / HSBhsv(246.8, 95.9%, 86.7%)
CMYK85.1%, 95.9%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,165,213
CSS custom property--colour: #2109DD;

Brightness & contrast

Relative luminance0.05739WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.78:1
Contrast with white9.78:1WCAG normal text: AAA
Contrast with black2.15:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#DEF622

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004EE2no red cones; affects about 1% of men; ΔE 35.4 from the original
Deuteranopia#0039DAno green cones; the most common form, about 1% of men; ΔE 23.4 from the original
Tritanopia#005C82no blue cones; rare, and affects men and women equally; ΔE 103.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.78:1WCAG large text: AAA
Contrast with black, large text2.15:1WCAG large text: Fail

Named colours

Medium blue · ΔE 5.4Blue · ΔE 16.8Blue violet · ΔE 23.9Dark violet · ΔE 27.2Dark blue · ΔE 35.1Dark orchid · ΔE 37.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 5.45, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C5DD09
Analogous#095BDD, #8B09DD
Triadic#DD2109, #09DD21
Split complementary#DD8B09, #5BDD09
Tetradic#DD095B, #C5DD09, #09DD8B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BEB6FC
Lighter +30%#9285FA
Lighter +20%#6754F8
Lighter +10%#3B23F6
Darker −10%#1A07AC
Darker −20%#12057B
Darker −30%#0B034A
Darker −40%#040119
More saturated +25%#1A00E6
Less saturated −25%#3726C0

Channel breakdown

R33
G9
B221
Red33 (12.9%)
Green9 (3.5%)
Blue221 (86.7%)
Hue246.79°
Saturation (HSL)92.17%
Lightness45.1%
Dominant channelBlue
Hex per channelR 21 · G 09 · B DD

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Every value on this page was computed from “2109dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.