Colour
#00218C
- #00218C
- Blue
- Dark
- Nearest: Midnight blue
#00218C is a blue with RGB values 0, 33, 140 and HSL 226°, 100%, 27%. It is a dark colour, so white text on it reaches 13.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.
Colour values
#00218C#00218C
HEX#00218C
RGBrgb(0, 33, 140)
RGB (0–1)0, 0.1294, 0.549
RGB percentages0%, 12.9%, 54.9%
HSLhsl(225.9, 100%, 27.5%)
HSV / HSBhsv(225.9, 100%, 54.9%)
CMYK100%, 76.4%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,588
CSS custom property--colour: #00218C;
Brightness & contrast
Relative luminance0.02981WCAG 2.x, 0 is black and 1 is white
Perceived brightness53.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.16:1
Contrast with white13.16:1WCAG normal text: AAA
Contrast with black1.6:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#FFDE73
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.16:1WCAG large text: AAA
Contrast with black, large text1.6:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8C6B00
Analogous#00678C, #25008C
Triadic#8C0021, #218C00
Split complementary#8C2500, #678C00
Tetradic#8C0067, #8C6B00, #008C25
Tints, shades & saturation
Channel breakdown
R0
G33
B140
Red0 (0%)
Green33 (12.9%)
Blue140 (54.9%)
Hue225.86°
Saturation (HSL)100%
Lightness27.45%
Dominant channelBlue
Hex per channelR 00 · G 21 · B 8C
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