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Recognised as Colour

#00228C

  • #00228C
  • Blue
  • Dark
  • Nearest: Midnight blue

#00228C is a blue with RGB values 0, 34, 140 and HSL 225°, 100%, 27%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00228C#00228C
HEX#00228C
RGBrgb(0, 34, 140)
RGB (0–1)0, 0.1333, 0.549
RGB percentages0%, 13.3%, 54.9%
HSLhsl(225.4, 100%, 27.5%)
HSV / HSBhsv(225.4, 100%, 54.9%)
CMYK100%, 75.7%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,844
CSS custom property--colour: #00228C;

Brightness & contrast

Relative luminance0.03038WCAG 2.x, 0 is black and 1 is white
Perceived brightness54 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.06:1
Contrast with white13.06:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#FFDD73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00378Fno red cones; affects about 1% of men; ΔE 16.2 from the original
Deuteranopia#002A8Ano green cones; the most common form, about 1% of men; ΔE 7.5 from the original
Tritanopia#004155no blue cones; rare, and affects men and women equally; ΔE 62.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.06:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 12Navy · ΔE 15Indigo · ΔE 18Dark blue · ΔE 18.3Rebecca purple · ΔE 19.9Dark slateblue · ΔE 22.9
Nearest named CSS colourMidnight blue (#191970)ΔE 12.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C6A00
Analogous#00688C, #24008C
Triadic#8C0022, #228C00
Split complementary#8C2400, #688C00
Tetradic#8C0068, #8C6A00, #008C24

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5981FF
Lighter +30%#265BFF
Lighter +20%#003BF2
Lighter +10%#002EBF
Darker −10%#001659
Darker −20%#000926
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00228C
Less saturated −25%#122B7B

Channel breakdown

R0
G34
B140
Red0 (0%)
Green34 (13.3%)
Blue140 (54.9%)
Hue225.43°
Saturation (HSL)100%
Lightness27.45%
Dominant channelBlue
Hex per channelR 00 · G 22 · B 8C

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Every value on this page was computed from “00228c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.