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Recognised as Colour

#222D3F

  • #222D3F
  • Blue
  • Dark
  • Nearest: Dark slate grey

#222D3F is a blue with RGB values 34, 45, 63 and HSL 217°, 30%, 19%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#222D3F#222D3F
HEX#222D3F
RGBrgb(34, 45, 63)
RGB (0–1)0.1333, 0.1765, 0.2471
RGB percentages13.3%, 17.6%, 24.7%
HSLhsl(217.2, 29.9%, 19%)
HSV / HSBhsv(217.2, 46%, 24.7%)
CMYK46%, 28.6%, 0%, 75.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,239,807
CSS custom property--colour: #222D3F;

Brightness & contrast

Relative luminance0.02576WCAG 2.x, 0 is black and 1 is white
Perceived brightness44.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.86:1
Contrast with white13.86:1WCAG normal text: AAA
Contrast with black1.52:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#DDD2C0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#272E40no red cones; affects about 1% of men; ΔE 1.6 from the original
Deuteranopia#232B3Fno green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#183133no blue cones; rare, and affects men and women equally; ΔE 13.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.86:1WCAG large text: AAA
Contrast with black, large text1.52:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.3Black · ΔE 22.4Dim grey · ΔE 29.2Slate grey · ΔE 34.8Gray · ΔE 37.6Light slate grey · ΔE 37.8
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3F3422
Analogous#223B3F, #26223F
Triadic#3F222D, #2D3F22
Split complementary#3F2522, #3C3F22
Tetradic#3F223B, #3F3422, #223F25

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#778FB6
Lighter +30%#5874A2
Lighter +20%#465C81
Lighter +10%#344560
Darker −10%#10151E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#162A4B
Less saturated −25%#2E3033

Channel breakdown

R34
G45
B63
Red34 (13.3%)
Green45 (17.6%)
Blue63 (24.7%)
Hue217.24°
Saturation (HSL)29.9%
Lightness19.02%
Dominant channelBlue
Hex per channelR 22 · G 2D · B 3F

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Every value on this page was computed from “222d3f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.