Colour

#1B2C39

#1B2C39
Blue
Dark
Nearest: Dark slate grey

#1B2C39 is a blue with RGB values 27, 44, 57 and HSL 206°, 36%, 16%. It is a dark colour, so white text on it reaches 14.3:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1B2C39#1B2C39

HEX#1B2C39

RGBrgb(27, 44, 57)

RGB (0–1)0.1059, 0.1725, 0.2235

RGB percentages10.6%, 17.3%, 22.4%

HSLhsl(206, 35.7%, 16.5%)

HSV / HSBhsv(206, 52.6%, 22.4%)

CMYK52.6%, 22.8%, 0%, 77.6%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,780,793

CSS custom property--colour: #1B2C39;

Brightness & contrast

Relative luminance0.0233WCAG 2.x, 0 is black and 1 is white

Perceived brightness41.5 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 14.33:1

Contrast with white14.33:1WCAG normal text: AAA

Contrast with black1.47:1WCAG normal text: Fail

Greyscale equivalent#292929

Inverted#E4D3C6

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#262C3Ano red cones; affects about 1% of men; ΔE 4.3 from the original

Deuteranopia#222939no green cones; the most common form, about 1% of men; ΔE 4.5 from the original

Tritanopia#0E2F30no blue cones; rare, and affects men and women equally; ΔE 10.8 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text14.33:1WCAG large text: AAA

Contrast with black, large text1.47:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 18.1 Black · ΔE 20.3 Dim grey · ΔE 29.4 Slate grey · ΔE 35.7 Gray · ΔE 38 Light slate grey · ΔE 38.8

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 18.08, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#39281B

Analogous#1B3937, #1B1D39

Triadic#391B2C, #2C391B

Split complementary#391B1D, #39371B

Tetradic#371B39, #39281B, #1D391B

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#6895B8

Lighter +30%#4C7CA1

Lighter +20%#3C617E

Lighter +10%#2B475C

Darker −10%#0B1116

Darker −20%#000000

Darker −30%#000000

Darker −40%#000000

More saturated +25%#102D43

Less saturated −25%#252B2F

Channel breakdown

R27

G44

B57

Red27 (10.6%)

Green44 (17.3%)

Blue57 (22.4%)

Hue206°

Saturation (HSL)35.71%

Lightness16.47%

Dominant channelBlue

Hex per channelR 1B · G 2C · B 39

Keep nerding

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#1B2C39

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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