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Recognised as Colour

#166DC7

  • #166DC7
  • Blue
  • Dark
  • Nearest: Cornflower blue

#166DC7 is a blue with RGB values 22, 109, 199 and HSL 211°, 80%, 43%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#166DC7#166DC7
HEX#166DC7
RGBrgb(22, 109, 199)
RGB (0–1)0.0863, 0.4275, 0.7804
RGB percentages8.6%, 42.7%, 78%
HSLhsl(210.5, 80.1%, 43.3%)
HSV / HSBhsv(210.5, 88.9%, 78%)
CMYK88.9%, 45.2%, 0%, 22%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,469,895
CSS custom property--colour: #166DC7;

Brightness & contrast

Relative luminance0.15231WCAG 2.x, 0 is black and 1 is white
Perceived brightness107.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.19:1
Contrast with white5.19:1WCAG normal text: AA
Contrast with black4.05:1WCAG normal text: Fail
Greyscale equivalent#616161
Inverted#E99238

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C75CAno red cones; affects about 1% of men; ΔE 5.2 from the original
Deuteranopia#0E66C5no green cones; the most common form, about 1% of men; ΔE 4.7 from the original
Tritanopia#008390no blue cones; rare, and affects men and women equally; ΔE 51.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.19:1WCAG large text: AAA
Contrast with black, large text4.05:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 16.5Dodgerblue · ΔE 16.7Royal blue · ΔE 20.4Dark slateblue · ΔE 25.1Steel blue · ΔE 26.2Slate blue · ΔE 26.7
Nearest named CSS colourCornflower blue (#6495ED)ΔE 16.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C77016
Analogous#16C6C7, #1716C7
Triadic#C7166D, #6DC716
Split complementary#C71716, #C6C716
Tetradic#C716C6, #C77016, #16C717

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2D4F7
Lighter +30%#85BAF1
Lighter +20%#57A0EC
Lighter +10%#2986E7
Darker −10%#115499
Darker −20%#0C3B6B
Darker −30%#07223D
Darker −40%#02080F
More saturated +25%#006DDD
Less saturated −25%#326DAB

Channel breakdown

R22
G109
B199
Red22 (8.6%)
Green109 (42.7%)
Blue199 (78%)
Hue210.51°
Saturation (HSL)80.09%
Lightness43.33%
Dominant channelBlue
Hex per channelR 16 · G 6D · B C7

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Every value on this page was computed from “166dc7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.