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Recognised as Colour

#105FB4

  • #105FB4
  • Blue
  • Dark
  • Nearest: Dark slateblue

#105FB4 is a blue with RGB values 16, 95, 180 and HSL 211°, 84%, 38%. It is a dark colour, so white text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#105FB4#105FB4
HEX#105FB4
RGBrgb(16, 95, 180)
RGB (0–1)0.0627, 0.3725, 0.7059
RGB percentages6.3%, 37.3%, 70.6%
HSLhsl(211.1, 83.7%, 38.4%)
HSV / HSBhsv(211.1, 91.1%, 70.6%)
CMYK91.1%, 47.2%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,073,076
CSS custom property--colour: #105FB4;

Brightness & contrast

Relative luminance0.1159WCAG 2.x, 0 is black and 1 is white
Perceived brightness95.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.33:1
Contrast with white6.33:1WCAG normal text: AA
Contrast with black3.32:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#EFA04B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2E67B7no red cones; affects about 1% of men; ΔE 4.9 from the original
Deuteranopia#0059B2no green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#007481no blue cones; rare, and affects men and women equally; ΔE 49.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.33:1WCAG large text: AAA
Contrast with black, large text3.32:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 20.3Cornflower blue · ΔE 21.5Royal blue · ΔE 22.2Dodgerblue · ΔE 22.4Slate blue · ΔE 26.5Steel blue · ΔE 26.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.27, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#B46510
Analogous#10B1B4, #1310B4
Triadic#B4105F, #5FB410
Split complementary#B41310, #B1B410
Tetradic#B410B1, #B46510, #10B413

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9AC6F6
Lighter +30%#6BACF2
Lighter +20%#3C92EE
Lighter +10%#1478E3
Darker −10%#0C4685
Darker −20%#082E56
Darker −30%#041527
Darker −40%#000000
More saturated +25%#005EC4
Less saturated −25%#29609C

Channel breakdown

R16
G95
B180
Red16 (6.3%)
Green95 (37.3%)
Blue180 (70.6%)
Hue211.1°
Saturation (HSL)83.67%
Lightness38.43%
Dominant channelBlue
Hex per channelR 10 · G 5F · B B4

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Every value on this page was computed from “105fb4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.