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Recognised as Colour

#428F82

  • #428F82
  • Cyan
  • Dark
  • Nearest: Dark cyan

#428F82 is a cyan with RGB values 66, 143, 130 and HSL 170°, 37%, 41%. It is a dark colour, so black text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Dark cyan.

Colour values

#428F82#428F82
HEX#428F82
RGBrgb(66, 143, 130)
RGB (0–1)0.2588, 0.5608, 0.5098
RGB percentages25.9%, 56.1%, 51%
HSLhsl(169.9, 36.8%, 41%)
HSV / HSBhsv(169.9, 53.8%, 56.1%)
CMYK53.8%, 0%, 9.1%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,362,114
CSS custom property--colour: #428F82;

Brightness & contrast

Relative luminance0.22415WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.48:1
Contrast with white3.83:1WCAG normal text: Fail
Contrast with black5.48:1WCAG normal text: AA
Greyscale equivalent#7E7E7E
Inverted#BD707D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#898882no red cones; affects about 1% of men; ΔE 26.6 from the original
Deuteranopia#7D7F83no green cones; the most common form, about 1% of men; ΔE 27.3 from the original
Tritanopia#15918Bno blue cones; rare, and affects men and women equally; ΔE 7.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.83:1WCAG large text: AA
Contrast with black, large text5.48:1WCAG large text: AAA

Named colours

Dark cyan · ΔE 9.6Teal · ΔE 10.4Cadetblue · ΔE 12.3Light seagreen · ΔE 16.5Sea green · ΔE 24.1Medium aquamarine · ΔE 25.5
Nearest named CSS colourDark cyan (#008B8B)ΔE 9.65, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8F424F
Analogous#428F5B, #42768F
Triadic#82428F, #8F8242
Split complementary#8F4276, #8F5B42
Tetradic#5B428F, #8F424F, #768F42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#BDE0DA
Lighter +30%#9AD0C7
Lighter +20%#77C0B4
Lighter +10%#54B0A1
Darker −10%#326C62
Darker −20%#224943
Darker −30%#122623
Darker −40%#020303
More saturated +25%#28A993
Less saturated −25%#5C7571

Channel breakdown

R66
G143
B130
Red66 (25.9%)
Green143 (56.1%)
Blue130 (51%)
Hue169.87°
Saturation (HSL)36.84%
Lightness40.98%
Dominant channelGreen
Hex per channelR 42 · G 8F · B 82

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Every value on this page was computed from “428f82” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.