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Recognised as Colour

#355A74

  • #355A74
  • Blue
  • Dark
  • Nearest: Dark slate grey

#355A74 is a blue with RGB values 53, 90, 116 and HSL 205°, 37%, 33%. It is a dark colour, so white text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#355A74#355A74
HEX#355A74
RGBrgb(53, 90, 116)
RGB (0–1)0.2078, 0.3529, 0.4549
RGB percentages20.8%, 35.3%, 45.5%
HSLhsl(204.8, 37.3%, 33.1%)
HSV / HSBhsv(204.8, 54.3%, 45.5%)
CMYK54.3%, 22.4%, 0%, 54.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,496,564
CSS custom property--colour: #355A74;

Brightness & contrast

Relative luminance0.0933WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.33:1
Contrast with white7.33:1WCAG normal text: AAA
Contrast with black2.87:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#CAA58B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4F5A75no red cones; affects about 1% of men; ΔE 8.3 from the original
Deuteranopia#465374no green cones; the most common form, about 1% of men; ΔE 9.3 from the original
Tritanopia#116063no blue cones; rare, and affects men and women equally; ΔE 19.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.33:1WCAG large text: AAA
Contrast with black, large text2.87:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 17.3Slate grey · ΔE 18.5Steel blue · ΔE 20.8Light slate grey · ΔE 21Dim grey · ΔE 21Gray · ΔE 25.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 17.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#744F35
Analogous#35746F, #353A74
Triadic#74355A, #5A7435
Split complementary#74353A, #746E35
Tetradic#6F3574, #744F35, #3B7435

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A1BFD4
Lighter +30%#7EA7C4
Lighter +20%#5B8FB4
Lighter +10%#457597
Darker −10%#253F51
Darker −20%#15242E
Darker −30%#05090B
Darker −40%#000000
More saturated +25%#205E89
Less saturated −25%#4A565F

Channel breakdown

R53
G90
B116
Red53 (20.8%)
Green90 (35.3%)
Blue116 (45.5%)
Hue204.76°
Saturation (HSL)37.28%
Lightness33.14%
Dominant channelBlue
Hex per channelR 35 · G 5A · B 74

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Every value on this page was computed from “355a74” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.