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Recognised as Colour

#40585A

  • #40585A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#40585A is a cyan with RGB values 64, 88, 90 and HSL 185°, 17%, 30%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#40585A#40585A
HEX#40585A
RGBrgb(64, 88, 90)
RGB (0–1)0.251, 0.3451, 0.3529
RGB percentages25.1%, 34.5%, 35.3%
HSLhsl(184.6, 16.9%, 30.2%)
HSV / HSBhsv(184.6, 28.9%, 35.3%)
CMYK28.9%, 2.2%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,216,922
CSS custom property--colour: #40585A;

Brightness & contrast

Relative luminance0.08808WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.6:1
Contrast with white7.6:1WCAG normal text: AAA
Contrast with black2.76:1WCAG normal text: Fail
Greyscale equivalent#535353
Inverted#BFA7A5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#54565Ano red cones; affects about 1% of men; ΔE 8.8 from the original
Deuteranopia#50525Ano green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#375A59no blue cones; rare, and affects men and women equally; ΔE 4.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.6:1WCAG large text: AAA
Contrast with black, large text2.76:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 5.4Dim grey · ΔE 12.9Slate grey · ΔE 19.5Gray · ΔE 20.3Light slate grey · ΔE 22.4Teal · ΔE 24.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 5.44, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A4240
Analogous#405A4F, #404B5A
Triadic#5A4058, #585A40
Split complementary#5A404B, #5A4F40
Tetradic#4F405A, #5A4240, #4B5A40

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A6BEC0
Lighter +30%#88A8AB
Lighter +20%#6B9295
Lighter +10%#557578
Darker −10%#2B3B3C
Darker −20%#161E1E
Darker −30%#000101
Darker −40%#000000
More saturated +25%#2D686D
Less saturated −25%#4D4D4D

Channel breakdown

R64
G88
B90
Red64 (25.1%)
Green88 (34.5%)
Blue90 (35.3%)
Hue184.62°
Saturation (HSL)16.88%
Lightness30.2%
Dominant channelBlue
Hex per channelR 40 · G 58 · B 5A

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Every value on this page was computed from “40585a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.