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Recognised as Colour

#42809A

  • #42809A
  • Cyan
  • Dark
  • Nearest: Slate grey

#42809A is a cyan with RGB values 66, 128, 154 and HSL 198°, 40%, 43%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#42809A#42809A
HEX#42809A
RGBrgb(66, 128, 154)
RGB (0–1)0.2588, 0.502, 0.6039
RGB percentages25.9%, 50.2%, 60.4%
HSLhsl(197.7, 40%, 43.1%)
HSV / HSBhsv(197.7, 57.1%, 60.4%)
CMYK57.1%, 16.9%, 0%, 39.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,358,298
CSS custom property--colour: #42809A;

Brightness & contrast

Relative luminance0.1893WCAG 2.x, 0 is black and 1 is white
Perceived brightness116.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.79:1
Contrast with white4.39:1WCAG normal text: Fail
Contrast with black4.79:1WCAG normal text: AA
Greyscale equivalent#757575
Inverted#BD7F65

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#727E9Bno red cones; affects about 1% of men; ΔE 15 from the original
Deuteranopia#66749Ano green cones; the most common form, about 1% of men; ΔE 16.7 from the original
Tritanopia#008888no blue cones; rare, and affects men and women equally; ΔE 21.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.39:1WCAG large text: AA
Contrast with black, large text4.79:1WCAG large text: AAA

Named colours

Slate grey · ΔE 14Light slate grey · ΔE 14.4Steel blue · ΔE 14.7Cadetblue · ΔE 18.1Teal · ΔE 20.4Dark cyan · ΔE 21.5
Nearest named CSS colourSlate grey (#708090)ΔE 13.97, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9A5C42
Analogous#429A88, #42549A
Triadic#9A4280, #809A42
Split complementary#9A4254, #9A8842
Tetradic#88429A, #9A5C42, #549A42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3DBE5
Lighter +30%#9FC6D6
Lighter +20%#7BB0C7
Lighter +10%#589BB7
Darker −10%#336276
Darker −20%#234553
Darker −30%#14272F
Darker −40%#05090B
More saturated +25%#278BB6
Less saturated −25%#5E757F

Channel breakdown

R66
G128
B154
Red66 (25.9%)
Green128 (50.2%)
Blue154 (60.4%)
Hue197.73°
Saturation (HSL)40%
Lightness43.14%
Dominant channelBlue
Hex per channelR 42 · G 80 · B 9A

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Every value on this page was computed from “42809a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.