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Colour

#170CB8

  • #170CB8
  • Blue
  • Dark
  • Nearest: Medium blue

#170CB8 is a blue with RGB values 23, 12, 184 and HSL 244°, 88%, 38%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#170CB8#170CB8
HEX#170CB8
RGBrgb(23, 12, 184)
RGB (0–1)0.0902, 0.0471, 0.7216
RGB percentages9%, 4.7%, 72.2%
HSLhsl(243.8, 87.8%, 38.4%)
HSV / HSBhsv(243.8, 93.5%, 72.2%)
CMYK87.5%, 93.5%, 0%, 27.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,510,584
CSS custom property--colour: #170CB8;

Brightness & contrast

Relative luminance0.03906WCAG 2.x, 0 is black and 1 is white
Perceived brightness64 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.79:1
Contrast with white11.79:1WCAG normal text: AAA
Contrast with black1.78:1WCAG normal text: Fail
Greyscale equivalent#1B1B1B
Inverted#E8F347

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0040BCno red cones; affects about 1% of men; ΔE 29.8 from the original
Deuteranopia#002EB5no green cones; the most common form, about 1% of men; ΔE 19.2 from the original
Tritanopia#004D6Bno blue cones; rare, and affects men and women equally; ΔE 90.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.79:1WCAG large text: AAA
Contrast with black, large text1.78:1WCAG large text: Fail

Named colours

Medium blue · ΔE 12.5Dark blue · ΔE 18.1Blue violet · ΔE 22.7Navy · ΔE 23.3Dark violet · ΔE 26.1Indigo · ΔE 29.6
Nearest named CSS colourMedium blue (#0000CD)ΔE 12.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#ADB80C
Analogous#0C57B8, #6D0CB8
Triadic#B8170C, #0CB817
Split complementary#B86D0C, #57B80C
Tetradic#B80C57, #ADB80C, #0CB86D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9E98F8
Lighter +30%#7168F5
Lighter +20%#4438F2
Lighter +10%#1D0FE8
Darker −10%#110988
Darker −20%#0B0658
Darker −30%#050328
Darker −40%#000000
More saturated +25%#0D00C4
Less saturated −25%#2C24A0

Channel breakdown

R23
G12
B184
Red23 (9%)
Green12 (4.7%)
Blue184 (72.2%)
Hue243.84°
Saturation (HSL)87.76%
Lightness38.43%
Dominant channelBlue
Hex per channelR 17 · G 0C · B B8

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Every value on this page was computed from “170cb8” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.