Colour

#37617B

#37617B
Blue
Dark
Nearest: Slate grey

#37617B is a blue with RGB values 55, 97, 123 and HSL 203°, 38%, 35%. It is a dark colour, so white text on it reaches 6.6:1 contrast (AA for normal text). The nearest named colour is Slate grey.

Colour values

#37617B#37617B

HEX#37617B

RGBrgb(55, 97, 123)

RGB (0–1)0.2157, 0.3804, 0.4824

RGB percentages21.6%, 38%, 48.2%

HSLhsl(202.9, 38.2%, 34.9%)

HSV / HSBhsv(202.9, 55.3%, 48.2%)

CMYK55.3%, 21.1%, 0%, 51.8%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer3,629,435

CSS custom property--colour: #37617B;

Brightness & contrast

Relative luminance0.10792WCAG 2.x, 0 is black and 1 is white

Perceived brightness90.3 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundWhitecontrast 6.65:1

Contrast with white6.65:1WCAG normal text: AA

Contrast with black3.16:1WCAG normal text: Fail

Greyscale equivalent#5A5A5A

Inverted#C89E84

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#55607Cno red cones; affects about 1% of men; ΔE 9.8 from the original

Deuteranopia#4C597Bno green cones; the most common form, about 1% of men; ΔE 10.9 from the original

Tritanopia#0B686Ano blue cones; rare, and affects men and women equally; ΔE 20 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text6.65:1WCAG large text: AAA

Contrast with black, large text3.16:1WCAG large text: AA

Named colours

Slate grey · ΔE 16.7 Dark slate grey · ΔE 18 Steel blue · ΔE 18.8 Light slate grey · ΔE 19 Dim grey · ΔE 20.8 Gray · ΔE 24.8

Nearest named CSS colourSlate grey (#708090)ΔE 16.66, a distinctly different colour

Hue familyblue

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#7B5137

Analogous#377B73, #373F7B

Triadic#7B3761, #617B37

Split complementary#7B373F, #7B7337

Tetradic#73377B, #7B5137, #3F7B37

Tints, shades & saturation

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

Lighter +40%#A7C5D7

Lighter +30%#83AEC8

Lighter +20%#6096B8

Lighter +10%#477D9E

Darker −10%#274558

Darker −20%#172935

Darker −30%#080E11

Darker −40%#000000

More saturated +25%#216691

Less saturated −25%#4D5C65

Channel breakdown

R55

G97

B123

Red55 (21.6%)

Green97 (38%)

Blue123 (48.2%)

Hue202.94°

Saturation (HSL)38.2%

Lightness34.9%

Dominant channelBlue

Hex per channelR 37 · G 61 · B 7B

Keep nerding

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

#37617B

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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