Colour
#00238F
- #00238F
- Blue
- Dark
- Nearest: Midnight blue
#00238F is a blue with RGB values 0, 35, 143 and HSL 225°, 100%, 28%. It is a dark colour, so white text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.
Colour values
#00238F#00238F
HEX#00238F
RGBrgb(0, 35, 143)
RGB (0–1)0, 0.1373, 0.5608
RGB percentages0%, 13.7%, 56.1%
HSLhsl(225.3, 100%, 28%)
HSV / HSBhsv(225.3, 100%, 56.1%)
CMYK100%, 75.5%, 0%, 43.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,103
CSS custom property--colour: #00238F;
Brightness & contrast
Relative luminance0.03185WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.83:1
Contrast with white12.83:1WCAG normal text: AAA
Contrast with black1.64:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#FFDC70
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.83:1WCAG large text: AAA
Contrast with black, large text1.64:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8F6C00
Analogous#006A8F, #25008F
Triadic#8F0023, #238F00
Split complementary#8F2500, #6A8F00
Tetradic#8F006A, #8F6C00, #008F25
Tints, shades & saturation
Channel breakdown
R0
G35
B143
Red0 (0%)
Green35 (13.7%)
Blue143 (56.1%)
Hue225.31°
Saturation (HSL)100%
Lightness28.04%
Dominant channelBlue
Hex per channelR 00 · G 23 · B 8F
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