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Recognised as Colour

#16181B

  • #16181B
  • Blue
  • Dark
  • Nearest: Black

#16181B is a blue with RGB values 22, 24, 27 and HSL 216°, 10%, 10%. It is a dark colour, so white text on it reaches 17.8:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#16181B#16181B
HEX#16181B
RGBrgb(22, 24, 27)
RGB (0–1)0.0863, 0.0941, 0.1059
RGB percentages8.6%, 9.4%, 10.6%
HSLhsl(216, 10.2%, 9.6%)
HSV / HSBhsv(216, 18.5%, 10.6%)
CMYK18.5%, 11.1%, 0%, 89.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,447,963
CSS custom property--colour: #16181B;

Brightness & contrast

Relative luminance0.00903WCAG 2.x, 0 is black and 1 is white
Perceived brightness23.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.79:1
Contrast with white17.79:1WCAG normal text: AAA
Contrast with black1.18:1WCAG normal text: Fail
Greyscale equivalent#181818
Inverted#E9E7E4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#17181Bno red cones; affects about 1% of men; ΔE 0.5 from the original
Deuteranopia#17181Bno green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#151919no blue cones; rare, and affects men and women equally; ΔE 2.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.79:1WCAG large text: AAA
Contrast with black, large text1.18:1WCAG large text: Fail

Named colours

Black · ΔE 8.5Dark slate grey · ΔE 25.9Dim grey · ΔE 36.3Slate grey · ΔE 45.5Gray · ΔE 45.5Light slate grey · ΔE 48.6
Nearest named CSS colourBlack (#000000)ΔE 8.51, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1B1916
Analogous#161A1B, #16161B
Triadic#1B1618, #181B16
Split complementary#1B1616, #1A1B16
Tetradic#1B161B, #1B1916, #161B17

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#727C8B
Lighter +30%#5B636F
Lighter +20%#444A53
Lighter +10%#2D3137
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#101721
Less saturated −25%#181818

Channel breakdown

R22
G24
B27
Red22 (8.6%)
Green24 (9.4%)
Blue27 (10.6%)
Hue216°
Saturation (HSL)10.2%
Lightness9.61%
Dominant channelBlue
Hex per channelR 16 · G 18 · B 1B

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Every value on this page was computed from “16181b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.