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Recognised as Colour

#374B69

  • #374B69
  • Blue
  • Dark
  • Nearest: Dark slate grey

#374B69 is a blue with RGB values 55, 75, 105 and HSL 216°, 31%, 31%. 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 slate grey.

Colour values

#374B69#374B69
HEX#374B69
RGBrgb(55, 75, 105)
RGB (0–1)0.2157, 0.2941, 0.4118
RGB percentages21.6%, 29.4%, 41.2%
HSLhsl(216, 31.2%, 31.4%)
HSV / HSBhsv(216, 47.6%, 41.2%)
CMYK47.6%, 28.6%, 0%, 58.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,623,785
CSS custom property--colour: #374B69;

Brightness & contrast

Relative luminance0.06864WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.85:1
Contrast with white8.85:1WCAG normal text: AAA
Contrast with black2.37:1WCAG normal text: Fail
Greyscale equivalent#494949
Inverted#C8B496

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#404D6Ano red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#3A4868no green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#245255no blue cones; rare, and affects men and women equally; ΔE 20.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text8.85:1WCAG large text: AAA
Contrast with black, large text2.37:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 20.7Slate grey · ΔE 23.5Dim grey · ΔE 23.7Steel blue · ΔE 24.9Light slate grey · ΔE 26.2Gray · ΔE 29.7
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 20.68, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#695537
Analogous#376469, #3C3769
Triadic#69374B, #4B6937
Split complementary#693C37, #646937
Tetradic#693764, #695537, #37693C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9FB1CD
Lighter +30%#7E96BB
Lighter +20%#5C7BAA
Lighter +10%#49638A
Darker −10%#253348
Darker −20%#141B26
Darker −30%#020305
Darker −40%#000000
More saturated +25%#23477D
Less saturated −25%#4B4F55

Channel breakdown

R55
G75
B105
Red55 (21.6%)
Green75 (29.4%)
Blue105 (41.2%)
Hue216°
Saturation (HSL)31.25%
Lightness31.37%
Dominant channelBlue
Hex per channelR 37 · G 4B · B 69

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Every value on this page was computed from “374b69” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.