Colour

#1B3753

#1B3753
Blue
Dark
Nearest: Dark slate grey

#1B3753 is a blue with RGB values 27, 55, 83 and HSL 210°, 51%, 22%. It is a dark colour, so white text on it reaches 12.2:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#1B3753#1B3753

HEX#1B3753

RGBrgb(27, 55, 83)

RGB (0–1)0.1059, 0.2157, 0.3255

RGB percentages10.6%, 21.6%, 32.5%

HSLhsl(210, 50.9%, 21.6%)

HSV / HSBhsv(210, 67.5%, 32.5%)

CMYK67.5%, 33.7%, 0%, 67.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer1,783,635

CSS custom property--colour: #1B3753;

Brightness & contrast

Relative luminance0.0359WCAG 2.x, 0 is black and 1 is white

Perceived brightness52.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 12.22:1

Contrast with white12.22:1WCAG normal text: AAA

Contrast with black1.72:1WCAG normal text: Fail

Greyscale equivalent#333333

Inverted#E4C8AC

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#2B3854no red cones; affects about 1% of men; ΔE 4.4 from the original

Deuteranopia#233352no green cones; the most common form, about 1% of men; ΔE 4.5 from the original

Tritanopia#003E41no blue cones; rare, and affects men and women equally; ΔE 20.6 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text12.22:1WCAG large text: AAA

Contrast with black, large text1.72:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 21.8 Dim grey · ΔE 30 Black · ΔE 30 Slate grey · ΔE 32.1 Steel blue · ΔE 32.7 Light slate grey · ΔE 34.9

Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 21.82, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#53371B

Analogous#1B5353, #1B1B53

Triadic#531B37, #37531B

Split complementary#531B1B, #53531B

Tetradic#531B53, #53371B, #1B531B

Tints, shades & saturation

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

Lighter +40%#6B9DCF

Lighter +30%#4584C2

Lighter +20%#346AA0

Lighter +10%#285179

Darker −10%#0E1E2D

Darker −20%#020406

Darker −30%#000000

Darker −40%#000000

More saturated +25%#0D3761

Less saturated −25%#293745

Channel breakdown

R27

G55

B83

Red27 (10.6%)

Green55 (21.6%)

Blue83 (32.5%)

Hue210°

Saturation (HSL)50.91%

Lightness21.57%

Dominant channelBlue

Hex per channelR 1B · G 37 · B 53

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#1B3753

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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