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Colour

#103A71

  • #103A71
  • Blue
  • Dark
  • Nearest: Dark slateblue

#103A71 is a blue with RGB values 16, 58, 113 and HSL 214°, 75%, 25%. It is a dark colour, so white text on it reaches 11.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#103A71#103A71
HEX#103A71
RGBrgb(16, 58, 113)
RGB (0–1)0.0627, 0.2275, 0.4431
RGB percentages6.3%, 22.7%, 44.3%
HSLhsl(214, 75.2%, 25.3%)
HSV / HSBhsv(214, 85.8%, 44.3%)
CMYK85.8%, 48.7%, 0%, 55.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,063,537
CSS custom property--colour: #103A71;

Brightness & contrast

Relative luminance0.04329WCAG 2.x, 0 is black and 1 is white
Perceived brightness59.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.26:1
Contrast with white11.26:1WCAG normal text: AAA
Contrast with black1.87:1WCAG normal text: Fail
Greyscale equivalent#353535
Inverted#EFC58E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C3F73no red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#023770no green cones; the most common form, about 1% of men; ΔE 2.1 from the original
Tritanopia#004750no blue cones; rare, and affects men and women equally; ΔE 34.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.26:1WCAG large text: AAA
Contrast with black, large text1.87:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20Midnight blue · ΔE 28.8Steel blue · ΔE 30.5Rebecca purple · ΔE 37.5Dark slate grey · ΔE 38.2Slate grey · ΔE 39.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#714710
Analogous#106A71, #161071
Triadic#71103A, #3A7110
Split complementary#711710, #6A7110
Tetradic#71106B, #714710, #107117

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#649EE9
Lighter +30%#3782E3
Lighter +20%#1D68CA
Lighter +10%#16519E
Darker −10%#0A2344
Darker −20%#030C18
Darker −30%#000000
Darker −40%#000000
More saturated +25%#003881
Less saturated −25%#203C61

Channel breakdown

R16
G58
B113
Red16 (6.3%)
Green58 (22.7%)
Blue113 (44.3%)
Hue214.02°
Saturation (HSL)75.19%
Lightness25.29%
Dominant channelBlue
Hex per channelR 10 · G 3A · B 71

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Every value on this page was computed from “103a71” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.