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Recognised as Colour

#374CBA

  • #374CBA
  • Blue
  • Dark
  • Nearest: Slate blue

#374CBA is a blue with RGB values 55, 76, 186 and HSL 230°, 54%, 47%. It is a dark colour, so white text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Slate blue.

Colour values

#374CBA#374CBA
HEX#374CBA
RGBrgb(55, 76, 186)
RGB (0–1)0.2157, 0.298, 0.7294
RGB percentages21.6%, 29.8%, 72.9%
HSLhsl(230.4, 54.4%, 47.3%)
HSV / HSBhsv(230.4, 70.4%, 72.9%)
CMYK70.4%, 59.1%, 0%, 27.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,624,122
CSS custom property--colour: #374CBA;

Brightness & contrast

Relative luminance0.09526WCAG 2.x, 0 is black and 1 is white
Perceived brightness90.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.23:1
Contrast with white7.23:1WCAG normal text: AAA
Contrast with black2.91:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#C8B345

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005DBEno red cones; affects about 1% of men; ΔE 14.7 from the original
Deuteranopia#0051B8no green cones; the most common form, about 1% of men; ΔE 8.4 from the original
Tritanopia#00677Bno blue cones; rare, and affects men and women equally; ΔE 63.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.23:1WCAG large text: AAA
Contrast with black, large text2.91:1WCAG large text: Fail

Named colours

Slate blue · ΔE 11Royal blue · ΔE 12.3Rebecca purple · ΔE 19.4Dark slateblue · ΔE 19.7Medium slateblue · ΔE 19.8Medium purple · ΔE 22
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 11.01, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BAA537
Analogous#378EBA, #6337BA
Triadic#BA374C, #4CBA37
Split complementary#BA6437, #8DBA37
Tetradic#BA378E, #BAA537, #37BA63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDD2F0
Lighter +30%#A5B0E5
Lighter +20%#7E8DD9
Lighter +10%#576ACD
Darker −10%#2B3C93
Darker −20%#202C6B
Darker −30%#141C44
Darker −40%#080C1D
More saturated +25%#1938D8
Less saturated −25%#55609C

Channel breakdown

R55
G76
B186
Red55 (21.6%)
Green76 (29.8%)
Blue186 (72.9%)
Hue230.38°
Saturation (HSL)54.36%
Lightness47.25%
Dominant channelBlue
Hex per channelR 37 · G 4C · B BA

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Every value on this page was computed from “374cba” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.