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Recognised as Colour

#173DF6

  • #173DF6
  • Blue
  • Dark
  • Nearest: Medium blue

#173DF6 is a blue with RGB values 23, 61, 246 and HSL 230°, 93%, 53%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Medium blue.

Colour values

#173DF6#173DF6
HEX#173DF6
RGBrgb(23, 61, 246)
RGB (0–1)0.0902, 0.2392, 0.9647
RGB percentages9%, 23.9%, 96.5%
HSLhsl(229.8, 92.5%, 52.7%)
HSV / HSBhsv(229.8, 90.7%, 96.5%)
CMYK90.7%, 75.2%, 0%, 3.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,523,190
CSS custom property--colour: #173DF6;

Brightness & contrast

Relative luminance0.10173WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.92:1
Contrast with white6.92:1WCAG normal text: AA
Contrast with black3.03:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#E8C209

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0065FBno red cones; affects about 1% of men; ΔE 27.5 from the original
Deuteranopia#004FF3no green cones; the most common form, about 1% of men; ΔE 14.2 from the original
Tritanopia#007598no blue cones; rare, and affects men and women equally; ΔE 98 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.92:1WCAG large text: AAA
Contrast with black, large text3.03:1WCAG large text: AA

Named colours

Medium blue · ΔE 16.6Blue violet · ΔE 22.6Blue · ΔE 27.2Dark violet · ΔE 29.7Dark orchid · ΔE 34.3Dark blue · ΔE 34.4
Nearest named CSS colourMedium blue (#0000CD)ΔE 16.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F6D017
Analogous#17ACF6, #6117F6
Triadic#F6173D, #3DF617
Split complementary#F66017, #ADF617
Tetradic#F617AC, #F6D017, #17F660

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DBE1FE
Lighter +30%#AAB8FC
Lighter +20%#798FFA
Lighter +10%#4866F8
Darker −10%#082BD2
Darker −20%#0621A1
Darker −30%#041770
Darker −40%#020D3F
More saturated +25%#0E37FF
Less saturated −25%#3551D8

Channel breakdown

R23
G61
B246
Red23 (9%)
Green61 (23.9%)
Blue246 (96.5%)
Hue229.78°
Saturation (HSL)92.53%
Lightness52.75%
Dominant channelBlue
Hex per channelR 17 · G 3D · B F6

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Every value on this page was computed from “173df6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.