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Recognised as Colour

#17057A

  • #17057A
  • Blue
  • Dark
  • Nearest: Navy

#17057A is a blue with RGB values 23, 5, 122 and HSL 249°, 92%, 25%. It is a dark colour, so white text on it reaches 15.7:1 contrast (AAA for normal text). The nearest named colour is Navy.

Colour values

#17057A#17057A
HEX#17057A
RGBrgb(23, 5, 122)
RGB (0–1)0.0902, 0.0196, 0.4784
RGB percentages9%, 2%, 47.8%
HSLhsl(249.2, 92.1%, 24.9%)
HSV / HSBhsv(249.2, 95.9%, 47.8%)
CMYK81.1%, 95.9%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,508,730
CSS custom property--colour: #17057A;

Brightness & contrast

Relative luminance0.01696WCAG 2.x, 0 is black and 1 is white
Perceived brightness43.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.68:1
Contrast with white15.68:1WCAG normal text: AAA
Contrast with black1.34:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#E8FA85

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00287Dno red cones; affects about 1% of men; ΔE 21.9 from the original
Deuteranopia#001E78no green cones; the most common form, about 1% of men; ΔE 16.1 from the original
Tritanopia#003045no blue cones; rare, and affects men and women equally; ΔE 65.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text15.68:1WCAG large text: AAA
Contrast with black, large text1.34:1WCAG large text: Fail

Named colours

Navy · ΔE 6.2Dark blue · ΔE 11.1Indigo · ΔE 11.7Midnight blue · ΔE 16.1Rebecca purple · ΔE 22.8Dark slateblue · ΔE 30.4
Nearest named CSS colourNavy (#000080)ΔE 6.21, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#687A05
Analogous#052D7A, #52057A
Triadic#7A1705, #057A17
Split complementary#7A5205, #2D7A05
Tetradic#7A052D, #687A05, #057A52

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6C53F8
Lighter +30%#4322F6
Lighter +20%#2909DC
Lighter +10%#2007AB
Darker −10%#0E0349
Darker −20%#050118
Darker −30%#000000
Darker −40%#000000
More saturated +25%#14007F
Less saturated −25%#22156A

Channel breakdown

R23
G5
B122
Red23 (9%)
Green5 (2%)
Blue122 (47.8%)
Hue249.23°
Saturation (HSL)92.13%
Lightness24.9%
Dominant channelBlue
Hex per channelR 17 · G 05 · B 7A

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Every value on this page was computed from “17057a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.