Colour
#00178E
- #00178E
- Blue
- Dark
- Nearest: Navy
#00178E is a blue with RGB values 0, 23, 142 and HSL 230°, 100%, 28%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Navy.
Colour values
#00178E#00178E
HEX#00178E
RGBrgb(0, 23, 142)
RGB (0–1)0, 0.0902, 0.5569
RGB percentages0%, 9%, 55.7%
HSLhsl(230.3, 100%, 27.8%)
HSV / HSBhsv(230.3, 100%, 55.7%)
CMYK100%, 83.8%, 0%, 44.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,030
CSS custom property--colour: #00178E;
Brightness & contrast
Relative luminance0.02566WCAG 2.x, 0 is black and 1 is white
Perceived brightness51.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.88:1
Contrast with white13.88:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#1B1B1B
Inverted#FFE871
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.88:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#8E7700
Analogous#005E8E, #30008E
Triadic#8E0017, #178E00
Split complementary#8E3000, #5E8E00
Tetradic#8E005E, #8E7700, #008E30
Tints, shades & saturation
Channel breakdown
R0
G23
B142
Red0 (0%)
Green23 (9%)
Blue142 (55.7%)
Hue230.28°
Saturation (HSL)100%
Lightness27.84%
Dominant channelBlue
Hex per channelR 00 · G 17 · B 8E
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