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Recognised as Colour

#173C6E

  • #173C6E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#173C6E is a blue with RGB values 23, 60, 110 and HSL 214°, 65%, 26%. It is a dark colour, so white text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#173C6E#173C6E
HEX#173C6E
RGBrgb(23, 60, 110)
RGB (0–1)0.0902, 0.2353, 0.4314
RGB percentages9%, 23.5%, 43.1%
HSLhsl(214.5, 65.4%, 26.1%)
HSV / HSBhsv(214.5, 79.1%, 43.1%)
CMYK79.1%, 45.5%, 0%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,522,798
CSS custom property--colour: #173C6E;

Brightness & contrast

Relative luminance0.0454WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.01:1
Contrast with white11.01:1WCAG normal text: AAA
Contrast with black1.91:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#E8C391

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#234070no red cones; affects about 1% of men; ΔE 2.6 from the original
Deuteranopia#13386Dno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#00484Fno blue cones; rare, and affects men and women equally; ΔE 32.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.01:1WCAG large text: AAA
Contrast with black, large text1.91:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.6Steel blue · ΔE 29Midnight blue · ΔE 32Dark slate grey · ΔE 34.7Slate grey · ΔE 36.3Light slate grey · ΔE 38.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E4917
Analogous#17686E, #1D176E
Triadic#6E173C, #3C6E17
Split complementary#6E1D17, #686E17
Tetradic#6E1768, #6E4917, #176E1D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#70A0E1
Lighter +30%#4684D8
Lighter +20%#296AC2
Lighter +10%#205398
Darker −10%#0E2544
Darker −20%#050E1A
Darker −30%#000000
Darker −40%#000000
More saturated +25%#063A7F
Less saturated −25%#283E5D

Channel breakdown

R23
G60
B110
Red23 (9%)
Green60 (23.5%)
Blue110 (43.1%)
Hue214.48°
Saturation (HSL)65.41%
Lightness26.08%
Dominant channelBlue
Hex per channelR 17 · G 3C · B 6E

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Every value on this page was computed from “173c6e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.