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Recognised as Colour

#2172F4

  • #2172F4
  • Blue
  • Dark
  • Nearest: Royal blue

#2172F4 is a blue with RGB values 33, 114, 244 and HSL 217°, 91%, 54%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2172F4#2172F4
HEX#2172F4
RGBrgb(33, 114, 244)
RGB (0–1)0.1294, 0.4471, 0.9569
RGB percentages12.9%, 44.7%, 95.7%
HSLhsl(217, 90.6%, 54.3%)
HSV / HSBhsv(217, 86.5%, 95.7%)
CMYK86.5%, 53.3%, 0%, 4.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,192,116
CSS custom property--colour: #2172F4;

Brightness & contrast

Relative luminance0.1889WCAG 2.x, 0 is black and 1 is white
Perceived brightness121.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.78:1
Contrast with white4.4:1WCAG normal text: Fail
Contrast with black4.78:1WCAG normal text: AA
Greyscale equivalent#6A6A6A
Inverted#DE8D0B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0082F9no red cones; affects about 1% of men; ΔE 11.1 from the original
Deuteranopia#006FF1no green cones; the most common form, about 1% of men; ΔE 1.6 from the original
Tritanopia#0092A8no blue cones; rare, and affects men and women equally; ΔE 70.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.4:1WCAG large text: AA
Contrast with black, large text4.78:1WCAG large text: AAA

Named colours

Royal blue · ΔE 7.1Medium slateblue · ΔE 17.7Slate blue · ΔE 18.7Dodgerblue · ΔE 18.9Medium purple · ΔE 25.1Cornflower blue · ΔE 29.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 7.06, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F4A321
Analogous#21DBF4, #3A21F4
Triadic#F42172, #72F421
Split complementary#F43A21, #DCF421
Tetradic#F421DB, #F4A321, #21F43A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3EDFE
Lighter +30%#B3CFFB
Lighter +20%#82B0F9
Lighter +10%#5291F6
Darker −10%#0B59D7
Darker −20%#0845A7
Darker −30%#063176
Darker −40%#031D46
More saturated +25%#166FFF
Less saturated −25%#3E79D7

Channel breakdown

R33
G114
B244
Red33 (12.9%)
Green114 (44.7%)
Blue244 (95.7%)
Hue216.97°
Saturation (HSL)90.56%
Lightness54.31%
Dominant channelBlue
Hex per channelR 21 · G 72 · B F4

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Every value on this page was computed from “2172f4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.