Recognised as Colour
#1B2DB9
- #1B2DB9
- Blue
- Dark
- Nearest: Dark blue
#1B2DB9 is a blue with RGB values 27, 45, 185 and HSL 233°, 75%, 42%. It is a dark colour, so white text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Dark blue.
Colour values
#1B2DB9#1B2DB9
HEX#1B2DB9
RGBrgb(27, 45, 185)
RGB (0–1)0.1059, 0.1765, 0.7255
RGB percentages10.6%, 17.6%, 72.5%
HSLhsl(233.2, 74.5%, 41.6%)
HSV / HSBhsv(233.2, 85.4%, 72.5%)
CMYK85.4%, 75.7%, 0%, 27.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,781,177
CSS custom property--colour: #1B2DB9;
Brightness & contrast
Relative luminance0.05613WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.89:1
Contrast with white9.89:1WCAG normal text: AAA
Contrast with black2.12:1WCAG normal text: Fail
Greyscale equivalent#333333
Inverted#E4D246
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.89:1WCAG large text: AAA
Contrast with black, large text2.12:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#B9A71B
Analogous#1B7CB9, #581BB9
Triadic#B91B2D, #2DB91B
Split complementary#B9581B, #7CB91B
Tetradic#B91B7C, #B9A71B, #1BB958
Tints, shades & saturation
Channel breakdown
R27
G45
B185
Red27 (10.6%)
Green45 (17.6%)
Blue185 (72.5%)
Hue233.16°
Saturation (HSL)74.53%
Lightness41.57%
Dominant channelBlue
Hex per channelR 1B · G 2D · B B9
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Nerdulate something else
Nothing in mind? Surprise me · today’s page