Recognised as Colour
#1B0189
- #1B0189
- Blue
- Dark
- Nearest: Dark blue
#1B0189 is a blue with RGB values 27, 1, 137 and HSL 251°, 99%, 27%. It is a dark colour, so white text on it reaches 14.9:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#1B0189#1B0189
HEX#1B0189
RGBrgb(27, 1, 137)
RGB (0–1)0.1059, 0.0039, 0.5373
RGB percentages10.6%, 0.4%, 53.7%
HSLhsl(251.5, 98.6%, 27.1%)
HSV / HSBhsv(251.5, 99.3%, 53.7%)
CMYK80.3%, 99.3%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,769,865
CSS custom property--colour: #1B0189;
Brightness & contrast
Relative luminance0.02061WCAG 2.x, 0 is black and 1 is white
Perceived brightness48.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.87:1
Contrast with white14.87:1WCAG normal text: AAA
Contrast with black1.41:1WCAG normal text: Fail
Greyscale equivalent#101010
Inverted#E4FE76
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text14.87:1WCAG large text: AAA
Contrast with black, large text1.41:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#6F8901
Analogous#012B89, #5F0189
Triadic#891B01, #01891B
Split complementary#895F01, #2B8901
Tetradic#89012B, #6F8901, #01895F
Tints, shades & saturation
Channel breakdown
R27
G1
B137
Red27 (10.6%)
Green1 (0.4%)
Blue137 (53.7%)
Hue251.47°
Saturation (HSL)98.55%
Lightness27.06%
Dominant channelBlue
Hex per channelR 1B · G 01 · B 89
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