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Recognised as Colour

#3F545A

  • #3F545A
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#3F545A is a cyan with RGB values 63, 84, 90 and HSL 193°, 18%, 30%. It is a dark colour, so white text on it reaches 8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#3F545A#3F545A
HEX#3F545A
RGBrgb(63, 84, 90)
RGB (0–1)0.2471, 0.3294, 0.3529
RGB percentages24.7%, 32.9%, 35.3%
HSLhsl(193.3, 17.6%, 30%)
HSV / HSBhsv(193.3, 30%, 35.3%)
CMYK30%, 6.7%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,150,362
CSS custom property--colour: #3F545A;

Brightness & contrast

Relative luminance0.08136WCAG 2.x, 0 is black and 1 is white
Perceived brightness79.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.99:1
Contrast with white7.99:1WCAG normal text: AAA
Contrast with black2.63:1WCAG normal text: Fail
Greyscale equivalent#505050
Inverted#C0ABA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#50535Ano red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#4B4F5Ano green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#365656no blue cones; rare, and affects men and women equally; ΔE 5.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.99:1WCAG large text: AAA
Contrast with black, large text2.63:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 6.5Dim grey · ΔE 13.5Slate grey · ΔE 19.6Gray · ΔE 21.3Light slate grey · ΔE 22.6Teal · ΔE 26.5
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 6.55, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A453F
Analogous#3F5A53, #3F465A
Triadic#5A3F54, #545A3F
Split complementary#5A3F46, #5A533F
Tetradic#533F5A, #5A453F, #465A3F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A5BAC0
Lighter +30%#87A3AB
Lighter +20%#698C96
Lighter +10%#547078
Darker −10%#2A383C
Darker −20%#151C1E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2C5F6D
Less saturated −25%#4D4D4D

Channel breakdown

R63
G84
B90
Red63 (24.7%)
Green84 (32.9%)
Blue90 (35.3%)
Hue193.33°
Saturation (HSL)17.65%
Lightness30%
Dominant channelBlue
Hex per channelR 3F · G 54 · B 5A

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Every value on this page was computed from “3f545a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.