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Colour

#171A24

  • #171A24
  • Blue
  • Dark
  • Nearest: Black

#171A24 is a blue with RGB values 23, 26, 36 and HSL 226°, 22%, 12%. It is a dark colour, so white text on it reaches 17.4:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#171A24#171A24
HEX#171A24
RGBrgb(23, 26, 36)
RGB (0–1)0.0902, 0.102, 0.1412
RGB percentages9%, 10.2%, 14.1%
HSLhsl(226.2, 22%, 11.6%)
HSV / HSBhsv(226.2, 36.1%, 14.1%)
CMYK36.1%, 27.8%, 0%, 85.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,514,020
CSS custom property--colour: #171A24;

Brightness & contrast

Relative luminance0.01048WCAG 2.x, 0 is black and 1 is white
Perceived brightness26.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.36:1
Contrast with white17.36:1WCAG normal text: AAA
Contrast with black1.21:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#E8E5DB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#171B24no red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#161A24no green cones; the most common form, about 1% of men; ΔE 0.4 from the original
Tritanopia#141C1Dno blue cones; rare, and affects men and women equally; ΔE 7.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.36:1WCAG large text: AAA
Contrast with black, large text1.21:1WCAG large text: Fail

Named colours

Black · ΔE 12Dark slate grey · ΔE 25.9Dim grey · ΔE 35.8Slate grey · ΔE 43.7Gray · ΔE 44.8Light slate grey · ΔE 46.8
Nearest named CSS colourBlack (#000000)ΔE 12.02, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#242117
Analogous#172024, #1B1724
Triadic#24171A, #1A2417
Split complementary#241B17, #202417
Tetradic#241720, #242117, #17241B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#68759F
Lighter +30%#535D81
Lighter +20%#3F4762
Lighter +10%#2B3043
Darker −10%#030405
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#10162B
Less saturated −25%#1D1D1D

Channel breakdown

R23
G26
B36
Red23 (9%)
Green26 (10.2%)
Blue36 (14.1%)
Hue226.15°
Saturation (HSL)22.03%
Lightness11.57%
Dominant channelBlue
Hex per channelR 17 · G 1A · B 24

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Every value on this page was computed from “171a24” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.