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Recognised as Colour

#17135A

  • #17135A
  • Blue
  • Dark
  • Nearest: Midnight blue

#17135A is a blue with RGB values 23, 19, 90 and HSL 243°, 65%, 21%. It is a dark colour, so white text on it reaches 16.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#17135A#17135A
HEX#17135A
RGBrgb(23, 19, 90)
RGB (0–1)0.0902, 0.0745, 0.3529
RGB percentages9%, 7.5%, 35.3%
HSLhsl(243.4, 65.1%, 21.4%)
HSV / HSBhsv(243.4, 78.9%, 35.3%)
CMYK74.4%, 78.9%, 0%, 64.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,512,282
CSS custom property--colour: #17135A;

Brightness & contrast

Relative luminance0.01386WCAG 2.x, 0 is black and 1 is white
Perceived brightness36 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.44:1
Contrast with white16.44:1WCAG normal text: AAA
Contrast with black1.28:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#E8ECA5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00225Cno red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#001C59no green cones; the most common form, about 1% of men; ΔE 9.4 from the original
Tritanopia#002735no blue cones; rare, and affects men and women equally; ΔE 44.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.44:1WCAG large text: AAA
Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10Dark slateblue · ΔE 19Rebecca purple · ΔE 26.8Indigo · ΔE 28.5Navy · ΔE 30.7Dark blue · ΔE 35.8
Nearest named CSS colourMidnight blue (#191970)ΔE 9.97, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#565A13
Analogous#13335A, #3A135A
Triadic#5A1713, #135A17
Split complementary#5A3A13, #335A13
Tetradic#5A1333, #565A13, #135A3A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#645CDD
Lighter +30%#3B32D4
Lighter +20%#2D25AE
Lighter +10%#221C84
Darker −10%#0C0A30
Darker −20%#010106
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B0568
Less saturated −25%#23214C

Channel breakdown

R23
G19
B90
Red23 (9%)
Green19 (7.5%)
Blue90 (35.3%)
Hue243.38°
Saturation (HSL)65.14%
Lightness21.37%
Dominant channelBlue
Hex per channelR 17 · G 13 · B 5A

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Every value on this page was computed from “17135a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.