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Recognised as Colour

#103A65

  • #103A65
  • Blue
  • Dark
  • Nearest: Dark slateblue

#103A65 is a blue with RGB values 16, 58, 101 and HSL 210°, 73%, 23%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#103A65#103A65
HEX#103A65
RGBrgb(16, 58, 101)
RGB (0–1)0.0627, 0.2275, 0.3961
RGB percentages6.3%, 22.7%, 39.6%
HSLhsl(210.4, 72.6%, 22.9%)
HSV / HSBhsv(210.4, 84.2%, 39.6%)
CMYK84.2%, 42.6%, 0%, 60.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,063,525
CSS custom property--colour: #103A65;

Brightness & contrast

Relative luminance0.04076WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.57:1
Contrast with white11.57:1WCAG normal text: AAA
Contrast with black1.82:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#EFC59A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#253D67no red cones; affects about 1% of men; ΔE 3.6 from the original
Deuteranopia#173564no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#00444Ano blue cones; rare, and affects men and women equally; ΔE 28.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.57:1WCAG large text: AAA
Contrast with black, large text1.82:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.3Steel blue · ΔE 29.5Dark slate grey · ΔE 30.4Slate grey · ΔE 34.9Dim grey · ΔE 35.9Midnight blue · ΔE 36.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#653B10
Analogous#106465, #101065
Triadic#65103A, #3A6510
Split complementary#651110, #646510
Tetradic#651065, #653B10, #106511

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#5CA0E5
Lighter +30%#3086DE
Lighter +20%#1E6DBD
Lighter +10%#175391
Darker −10%#092139
Darker −20%#02070D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#013A74
Less saturated −25%#1F3A56

Channel breakdown

R16
G58
B101
Red16 (6.3%)
Green58 (22.7%)
Blue101 (39.6%)
Hue210.35°
Saturation (HSL)72.65%
Lightness22.94%
Dominant channelBlue
Hex per channelR 10 · G 3A · B 65

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Every value on this page was computed from “103a65” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.