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Recognised as Colour

#223C50

  • #223C50
  • Blue
  • Dark
  • Nearest: Dark slate grey

#223C50 is a blue with RGB values 34, 60, 80 and HSL 206°, 40%, 22%. It is a dark colour, so white text on it reaches 11.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#223C50#223C50
HEX#223C50
RGBrgb(34, 60, 80)
RGB (0–1)0.1333, 0.2353, 0.3137
RGB percentages13.3%, 23.5%, 31.4%
HSLhsl(206.1, 40.4%, 22.4%)
HSV / HSBhsv(206.1, 57.5%, 31.4%)
CMYK57.5%, 25%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,243,664
CSS custom property--colour: #223C50;

Brightness & contrast

Relative luminance0.04151WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.47:1
Contrast with white11.47:1WCAG normal text: AAA
Contrast with black1.83:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#DDC3AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#333C51no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#2D3750no green cones; the most common form, about 1% of men; ΔE 6.8 from the original
Tritanopia#074143no blue cones; rare, and affects men and women equally; ΔE 15.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.47:1WCAG large text: AAA
Contrast with black, large text1.83:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.9Dim grey · ΔE 25.5Black · ΔE 28.7Slate grey · ΔE 29.1Light slate grey · ΔE 32Steel blue · ΔE 33
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.89, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#503622
Analogous#22504D, #222550
Triadic#50223C, #3C5022
Split complementary#502225, #504D22
Tetradic#4D2250, #503622, #255022

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#78A4C6
Lighter +30%#548CB7
Lighter +20%#407298
Lighter +10%#315774
Darker −10%#13212C
Darker −20%#040608
Darker −30%#000000
Darker −40%#000000
More saturated +25%#143E5E
Less saturated −25%#303A42

Channel breakdown

R34
G60
B80
Red34 (13.3%)
Green60 (23.5%)
Blue80 (31.4%)
Hue206.09°
Saturation (HSL)40.35%
Lightness22.35%
Dominant channelBlue
Hex per channelR 22 · G 3C · B 50

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Every value on this page was computed from “223c50” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.