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Recognised as Colour

#37487A

  • #37487A
  • Blue
  • Dark
  • Nearest: Dark slateblue

#37487A is a blue with RGB values 55, 72, 122 and HSL 225°, 38%, 35%. It is a dark colour, so white text on it reaches 8.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#37487A#37487A
HEX#37487A
RGBrgb(55, 72, 122)
RGB (0–1)0.2157, 0.2824, 0.4784
RGB percentages21.6%, 28.2%, 47.8%
HSLhsl(224.8, 37.9%, 34.7%)
HSV / HSBhsv(224.8, 54.9%, 47.8%)
CMYK54.9%, 41%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,623,034
CSS custom property--colour: #37487A;

Brightness & contrast

Relative luminance0.06852WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.86:1
Contrast with white8.86:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#484848
Inverted#C8B785

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#344D7Cno red cones; affects about 1% of men; ΔE 3.8 from the original
Deuteranopia#2C4779no green cones; the most common form, about 1% of men; ΔE 2.6 from the original
Tritanopia#16535Bno blue cones; rare, and affects men and women equally; ΔE 32.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.86:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.6Steel blue · ΔE 24.8Slate grey · ΔE 31.3Light slate grey · ΔE 33.2Midnight blue · ΔE 33.5Dark slate grey · ΔE 33.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7A6937
Analogous#376A7A, #47377A
Triadic#7A3748, #487A37
Split complementary#7A4737, #6A7A37
Tetradic#7A376A, #7A6937, #377A47

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A6B2D7
Lighter +30%#8394C7
Lighter +20%#6076B7
Lighter +10%#475D9D
Darker −10%#273357
Darker −20%#171F34
Darker −30%#070A11
Darker −40%#000000
More saturated +25%#213D90
Less saturated −25%#4D5364

Channel breakdown

R55
G72
B122
Red55 (21.6%)
Green72 (28.2%)
Blue122 (47.8%)
Hue224.78°
Saturation (HSL)37.85%
Lightness34.71%
Dominant channelBlue
Hex per channelR 37 · G 48 · B 7A

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Every value on this page was computed from “37487a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.