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Recognised as Colour

#2A6664

  • #2A6664
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#2A6664 is a cyan with RGB values 42, 102, 100 and HSL 178°, 42%, 28%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2A6664#2A6664
HEX#2A6664
RGBrgb(42, 102, 100)
RGB (0–1)0.1647, 0.4, 0.3922
RGB percentages16.5%, 40%, 39.2%
HSLhsl(178, 41.7%, 28.2%)
HSV / HSBhsv(178, 58.8%, 40%)
CMYK58.8%, 0%, 2%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,778,724
CSS custom property--colour: #2A6664;

Brightness & contrast

Relative luminance0.10915WCAG 2.x, 0 is black and 1 is white
Perceived brightness88.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.6:1
Contrast with white6.6:1WCAG normal text: AA
Contrast with black3.18:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#D5999B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#606164no red cones; affects about 1% of men; ΔE 20.3 from the original
Deuteranopia#565A65no green cones; the most common form, about 1% of men; ΔE 20.9 from the original
Tritanopia#006965no blue cones; rare, and affects men and women equally; ΔE 6.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.6:1WCAG large text: AAA
Contrast with black, large text3.18:1WCAG large text: AA

Named colours

Dark slate grey · ΔE 11.5Teal · ΔE 13.2Dark cyan · ΔE 17.3Dim grey · ΔE 20.9Cadetblue · ΔE 21.9Slate grey · ΔE 22.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 11.52, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#662A2C
Analogous#2A6646, #2A4A66
Triadic#642A66, #66642A
Split complementary#662A4A, #66462A
Tetradic#462A66, #662A2C, #4A662A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8CD0CE
Lighter +30%#68C1BE
Lighter +20%#48AEAB
Lighter +10%#398A87
Darker −10%#1B4241
Darker −20%#0C1E1D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#187875
Less saturated −25%#3C5453

Channel breakdown

R42
G102
B100
Red42 (16.5%)
Green102 (40%)
Blue100 (39.2%)
Hue178°
Saturation (HSL)41.67%
Lightness28.24%
Dominant channelGreen
Hex per channelR 2A · G 66 · B 64

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Every value on this page was computed from “2a6664” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.