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Recognised as Colour

#375AAB

  • #375AAB
  • Blue
  • Dark
  • Nearest: Dark slateblue

#375AAB is a blue with RGB values 55, 90, 171 and HSL 222°, 51%, 44%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#375AAB#375AAB
HEX#375AAB
RGBrgb(55, 90, 171)
RGB (0–1)0.2157, 0.3529, 0.6706
RGB percentages21.6%, 35.3%, 67.1%
HSLhsl(221.9, 51.3%, 44.3%)
HSV / HSBhsv(221.9, 67.8%, 67.1%)
CMYK67.8%, 47.4%, 0%, 32.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,627,691
CSS custom property--colour: #375AAB;

Brightness & contrast

Relative luminance0.11065WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.54:1
Contrast with white6.54:1WCAG normal text: AA
Contrast with black3.21:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#C8A554

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3063AEno red cones; affects about 1% of men; ΔE 6.7 from the original
Deuteranopia#1859A9no green cones; the most common form, about 1% of men; ΔE 4.4 from the original
Tritanopia#006D7Ano blue cones; rare, and affects men and women equally; ΔE 48.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.54:1WCAG large text: AAA
Contrast with black, large text3.21:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 15.2Royal blue · ΔE 22.9Cornflower blue · ΔE 23Slate blue · ΔE 24.4Dodgerblue · ΔE 25.9Medium purple · ΔE 27
Nearest named CSS colourDark slateblue (#483D8B)ΔE 15.23, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AB8837
Analogous#3794AB, #4E37AB
Triadic#AB375A, #5AAB37
Split complementary#AB4E37, #94AB37
Tetradic#AB3794, #AB8837, #37AB4E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2CFEC
Lighter +30%#9CB0DF
Lighter +20%#7591D3
Lighter +10%#4F73C6
Darker −10%#2B4684
Darker −20%#1E315E
Darker −30%#121D37
Darker −40%#050911
More saturated +25%#1B4FC7
Less saturated −25%#53658F

Channel breakdown

R55
G90
B171
Red55 (21.6%)
Green90 (35.3%)
Blue171 (67.1%)
Hue221.9°
Saturation (HSL)51.33%
Lightness44.31%
Dominant channelBlue
Hex per channelR 37 · G 5A · B AB

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Every value on this page was computed from “375aab” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.