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Recognised as Colour

#176DBB

  • #176DBB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#176DBB is a blue with RGB values 23, 109, 187 and HSL 209°, 78%, 41%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#176DBB#176DBB
HEX#176DBB
RGBrgb(23, 109, 187)
RGB (0–1)0.0902, 0.4275, 0.7333
RGB percentages9%, 42.7%, 73.3%
HSLhsl(208.5, 78.1%, 41.2%)
HSV / HSBhsv(208.5, 87.7%, 73.3%)
CMYK87.7%, 41.7%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,535,419
CSS custom property--colour: #176DBB;

Brightness & contrast

Relative luminance0.14707WCAG 2.x, 0 is black and 1 is white
Perceived brightness105.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.33:1
Contrast with white5.33:1WCAG normal text: AA
Contrast with black3.94:1WCAG normal text: Fail
Greyscale equivalent#606060
Inverted#E89244

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4673BEno red cones; affects about 1% of men; ΔE 6.1 from the original
Deuteranopia#2865B9no green cones; the most common form, about 1% of men; ΔE 6.6 from the original
Tritanopia#00808Bno blue cones; rare, and affects men and women equally; ΔE 45.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.33:1WCAG large text: AAA
Contrast with black, large text3.94:1WCAG large text: AA

Named colours

Cornflower blue · ΔE 17.3Steel blue · ΔE 19.4Dodgerblue · ΔE 21.7Dark slateblue · ΔE 26.1Royal blue · ΔE 27.7Slate blue · ΔE 32.6
Nearest named CSS colourCornflower blue (#6495ED)ΔE 17.32, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB6517
Analogous#17BBB7, #171BBB
Triadic#BB176D, #6DBB17
Split complementary#BB171B, #BBB717
Tetradic#B717BB, #BB6517, #1BBB17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#AAD1F4
Lighter +30%#7CB8EF
Lighter +20%#4FA0E9
Lighter +10%#2187E4
Darker −10%#11538E
Darker −20%#0C3860
Darker −30%#061E33
Darker −40%#010305
More saturated +25%#006ED2
Less saturated −25%#316CA1

Channel breakdown

R23
G109
B187
Red23 (9%)
Green109 (42.7%)
Blue187 (73.3%)
Hue208.54°
Saturation (HSL)78.1%
Lightness41.18%
Dominant channelBlue
Hex per channelR 17 · G 6D · B BB

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Every value on this page was computed from “176dbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.