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Recognised as Colour

#17214D

  • #17214D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#17214D is a blue with RGB values 23, 33, 77 and HSL 229°, 54%, 20%. It is a dark colour, so white text on it reaches 15.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#17214D#17214D
HEX#17214D
RGBrgb(23, 33, 77)
RGB (0–1)0.0902, 0.1294, 0.302
RGB percentages9%, 12.9%, 30.2%
HSLhsl(228.9, 54%, 19.6%)
HSV / HSBhsv(228.9, 70.1%, 30.2%)
CMYK70.1%, 57.1%, 0%, 69.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,515,853
CSS custom property--colour: #17214D;

Brightness & contrast

Relative luminance0.01806WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.43:1
Contrast with white15.43:1WCAG normal text: AAA
Contrast with black1.36:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#E8DEB2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#07274Fno red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#00224Cno green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#002B33no blue cones; rare, and affects men and women equally; ΔE 29.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.43:1WCAG large text: AAA
Contrast with black, large text1.36:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 25.4Midnight blue · ΔE 28.8Black · ΔE 34.2Dark slate grey · ΔE 38.3Rebecca purple · ΔE 40.4Steel blue · ΔE 41.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 25.4, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4D4317
Analogous#173C4D, #28174D
Triadic#4D1721, #214D17
Split complementary#4D2817, #3C4D17
Tetradic#4D173C, #4D4317, #174D28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6075D0
Lighter +30%#3A53C3
Lighter +20%#2E439C
Lighter +10%#233274
Darker −10%#0B1026
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0A195A
Less saturated −25%#242941

Channel breakdown

R23
G33
B77
Red23 (9%)
Green33 (12.9%)
Blue77 (30.2%)
Hue228.89°
Saturation (HSL)54%
Lightness19.61%
Dominant channelBlue
Hex per channelR 17 · G 21 · B 4D

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Every value on this page was computed from “17214d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.