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Recognised as Colour

#37334D

  • #37334D
  • Blue
  • Dark
  • Nearest: Dark slate grey

#37334D is a blue with RGB values 55, 51, 77 and HSL 249°, 20%, 25%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#37334D#37334D
HEX#37334D
RGBrgb(55, 51, 77)
RGB (0–1)0.2157, 0.2, 0.302
RGB percentages21.6%, 20%, 30.2%
HSLhsl(249.2, 20.3%, 25.1%)
HSV / HSBhsv(249.2, 33.8%, 30.2%)
CMYK28.6%, 33.8%, 0%, 69.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,617,613
CSS custom property--colour: #37334D;

Brightness & contrast

Relative luminance0.03716WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.05:1
Contrast with white12.05:1WCAG normal text: AAA
Contrast with black1.74:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#C8CCB2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C374Eno red cones; affects about 1% of men; ΔE 6.2 from the original
Deuteranopia#2C364Cno green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#32373Cno blue cones; rare, and affects men and women equally; ΔE 14.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.05:1WCAG large text: AAA
Contrast with black, large text1.74:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 24.8Dim grey · ΔE 27.9Black · ΔE 28.7Slate grey · ΔE 32.3Dark slateblue · ΔE 33Light slate grey · ΔE 35.2
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 24.82, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#494D33
Analogous#333C4D, #44334D
Triadic#4D3733, #334D37
Split complementary#4D4433, #3C4D33
Tetradic#4D333C, #494D33, #334D44

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9994B8
Lighter +30%#7C75A4
Lighter +20%#635C8A
Lighter +10%#4D476C
Darker −10%#211F2E
Darker −20%#0B0A10
Darker −30%#000000
Darker −40%#000000
More saturated +25%#2C235D
Less saturated −25%#404040

Channel breakdown

R55
G51
B77
Red55 (21.6%)
Green51 (20%)
Blue77 (30.2%)
Hue249.23°
Saturation (HSL)20.31%
Lightness25.1%
Dominant channelBlue
Hex per channelR 37 · G 33 · B 4D

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Every value on this page was computed from “37334d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.