Colour
#1F008B
- #1F008B
- Blue
- Dark
- Nearest: Dark blue
#1F008B is a blue with RGB values 31, 0, 139 and HSL 253°, 100%, 27%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#1F008B#1F008B
HEX#1F008B
RGBrgb(31, 0, 139)
RGB (0–1)0.1216, 0, 0.5451
RGB percentages12.2%, 0%, 54.5%
HSLhsl(253.4, 100%, 27.3%)
HSV / HSBhsv(253.4, 100%, 54.5%)
CMYK77.7%, 100%, 0%, 45.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,031,755
CSS custom property--colour: #1F008B;
Brightness & contrast
Relative luminance0.02155WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.67:1
Contrast with white14.67:1WCAG normal text: AAA
Contrast with black1.43:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#E0FF74
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.67:1WCAG large text: AAA
Contrast with black, large text1.43:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#6C8B00
Analogous#00268B, #65008B
Triadic#8B1F00, #008B1F
Split complementary#8B6500, #268B00
Tetradic#8B0026, #6C8B00, #008B65
Tints, shades & saturation
Channel breakdown
R31
G0
B139
Red31 (12.2%)
Green0 (0%)
Blue139 (54.5%)
Hue253.38°
Saturation (HSL)100%
Lightness27.25%
Dominant channelBlue
Hex per channelR 1F · G 00 · B 8B
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