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Recognised as Colour

#374BBD

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

#374BBD is a blue with RGB values 55, 75, 189 and HSL 231°, 55%, 48%. 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

#374BBD#374BBD
HEX#374BBD
RGBrgb(55, 75, 189)
RGB (0–1)0.2157, 0.2941, 0.7412
RGB percentages21.6%, 29.4%, 74.1%
HSLhsl(231, 54.9%, 47.8%)
HSV / HSBhsv(231, 70.9%, 74.1%)
CMYK70.9%, 60.3%, 0%, 25.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,623,869
CSS custom property--colour: #374BBD;

Brightness & contrast

Relative luminance0.09519WCAG 2.x, 0 is black and 1 is white
Perceived brightness91 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 black2.9:1WCAG normal text: Fail
Greyscale equivalent#4F4F4F
Inverted#C8B442

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005DC1no red cones; affects about 1% of men; ΔE 15.3 from the original
Deuteranopia#0051BBno green cones; the most common form, about 1% of men; ΔE 8.9 from the original
Tritanopia#00687Dno blue cones; rare, and affects men and women equally; ΔE 65.1 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 text2.9:1WCAG large text: Fail

Named colours

Slate blue · ΔE 10.7Royal blue · ΔE 12.3Medium slateblue · ΔE 18.4Rebecca purple · ΔE 19.6Dark slateblue · ΔE 21.7Medium purple · ΔE 22.5
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 10.68, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BDA937
Analogous#378EBD, #6637BD
Triadic#BD374B, #4BBD37
Split complementary#BD6637, #8EBD37
Tetradic#BD378E, #BDA937, #37BD66

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CFD4F1
Lighter +30%#A7B1E6
Lighter +20%#808DDA
Lighter +10%#586ACF
Darker −10%#2C3B95
Darker −20%#202C6E
Darker −30%#151C46
Darker −40%#090C1F
More saturated +25%#1836DC
Less saturated −25%#56609F

Channel breakdown

R55
G75
B189
Red55 (21.6%)
Green75 (29.4%)
Blue189 (74.1%)
Hue231.04°
Saturation (HSL)54.92%
Lightness47.84%
Dominant channelBlue
Hex per channelR 37 · G 4B · B BD

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