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Recognised as Colour

#428FAA

  • #428FAA
  • Cyan
  • Dark
  • Nearest: Cadetblue

#428FAA is a cyan with RGB values 66, 143, 170 and HSL 196°, 44%, 46%. It is a dark colour, so black text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Cadetblue.

Colour values

#428FAA#428FAA
HEX#428FAA
RGBrgb(66, 143, 170)
RGB (0–1)0.2588, 0.5608, 0.6667
RGB percentages25.9%, 56.1%, 66.7%
HSLhsl(195.6, 44.1%, 46.3%)
HSV / HSBhsv(195.6, 61.2%, 66.7%)
CMYK61.2%, 15.9%, 0%, 33.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,362,154
CSS custom property--colour: #428FAA;

Brightness & contrast

Relative luminance0.23705WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.74:1
Contrast with white3.66:1WCAG normal text: Fail
Contrast with black5.74:1WCAG normal text: AA
Greyscale equivalent#818181
Inverted#BD7055

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#808CABno red cones; affects about 1% of men; ΔE 18.7 from the original
Deuteranopia#7181AAno green cones; the most common form, about 1% of men; ΔE 19.9 from the original
Tritanopia#009798no blue cones; rare, and affects men and women equally; ΔE 20.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.66:1WCAG large text: AA
Contrast with black, large text5.74:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 15.5Steel blue · ΔE 16.1Light slate grey · ΔE 16.7Slate grey · ΔE 17.4Dark cyan · ΔE 19.9Teal · ΔE 20
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 15.49, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AA5D42
Analogous#42AA91, #425BAA
Triadic#AA428F, #8FAA42
Split complementary#AA425B, #AA9142
Tetradic#9142AA, #AA5D42, #5BAA42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDE3EB
Lighter +30%#A8CFDD
Lighter +20%#83BBCF
Lighter +10%#5EA7C1
Darker −10%#347085
Darker −20%#255161
Darker −30%#17323C
Darker −40%#091317
More saturated +25%#259DC7
Less saturated −25%#60818C

Channel breakdown

R66
G143
B170
Red66 (25.9%)
Green143 (56.1%)
Blue170 (66.7%)
Hue195.58°
Saturation (HSL)44.07%
Lightness46.27%
Dominant channelBlue
Hex per channelR 42 · G 8F · B AA

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Every value on this page was computed from “428faa” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.