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Recognised as Colour

#15161D

  • #15161D
  • Blue
  • Dark
  • Nearest: Black

#15161D is a blue with RGB values 21, 22, 29 and HSL 233°, 16%, 10%. It is a dark colour, so white text on it reaches 18:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#15161D#15161D
HEX#15161D
RGBrgb(21, 22, 29)
RGB (0–1)0.0824, 0.0863, 0.1137
RGB percentages8.2%, 8.6%, 11.4%
HSLhsl(232.5, 16%, 9.8%)
HSV / HSBhsv(232.5, 27.6%, 11.4%)
CMYK27.6%, 24.1%, 0%, 88.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,381,917
CSS custom property--colour: #15161D;

Brightness & contrast

Relative luminance0.00822WCAG 2.x, 0 is black and 1 is white
Perceived brightness22.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.04:1
Contrast with white18.04:1WCAG normal text: AAA
Contrast with black1.16:1WCAG normal text: Fail
Greyscale equivalent#161616
Inverted#EAE9E2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#14171Dno red cones; affects about 1% of men; ΔE 1.2 from the original
Deuteranopia#14161Dno green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#131718no blue cones; rare, and affects men and women equally; ΔE 4.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.04:1WCAG large text: AAA
Contrast with black, large text1.16:1WCAG large text: Fail

Named colours

Black · ΔE 9.1Dark slate grey · ΔE 27.3Dim grey · ΔE 37.4Slate grey · ΔE 45.9Gray · ΔE 46.5Light slate grey · ΔE 49
Nearest named CSS colourBlack (#000000)ΔE 9.11, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1D1C15
Analogous#151A1D, #18151D
Triadic#1D1516, #161D15
Split complementary#1D1815, #1A1D15
Tetradic#1D151A, #1D1C15, #151D18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6B7093
Lighter +30%#555976
Lighter +20%#404358
Lighter +10%#2A2C3B
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0F1123
Less saturated −25%#191919

Channel breakdown

R21
G22
B29
Red21 (8.2%)
Green22 (8.6%)
Blue29 (11.4%)
Hue232.5°
Saturation (HSL)16%
Lightness9.8%
Dominant channelBlue
Hex per channelR 15 · G 16 · B 1D

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Every value on this page was computed from “15161d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.