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Colour

#1B1E21

  • #1B1E21
  • Blue
  • Dark
  • Nearest: Black

#1B1E21 is a blue with RGB values 27, 30, 33 and HSL 210°, 10%, 12%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1B1E21#1B1E21
HEX#1B1E21
RGBrgb(27, 30, 33)
RGB (0–1)0.1059, 0.1176, 0.1294
RGB percentages10.6%, 11.8%, 12.9%
HSLhsl(210, 10%, 11.8%)
HSV / HSBhsv(210, 18.2%, 12.9%)
CMYK18.2%, 9.1%, 0%, 87.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,777,185
CSS custom property--colour: #1B1E21;

Brightness & contrast

Relative luminance0.01271WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.74:1
Contrast with white16.74:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#1E1E1E
Inverted#E4E1DE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1D1E21no red cones; affects about 1% of men; ΔE 1 from the original
Deuteranopia#1C1D21no green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#1A1F1Fno 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 text16.74:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Black · ΔE 11.4Dark slate grey · ΔE 23.1Dim grey · ΔE 33.4Slate grey · ΔE 42.6Gray · ΔE 42.6Light slate grey · ΔE 45.7
Nearest named CSS colourBlack (#000000)ΔE 11.37, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#211E1B
Analogous#1B2121, #1B1B21
Triadic#211B1E, #1E211B
Split complementary#211B1B, #21211B
Tetradic#211B21, #211E1B, #1B211B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#788490
Lighter +30%#606A75
Lighter +20%#495159
Lighter +10%#32383D
Darker −10%#040405
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#141E29
Less saturated −25%#1E1E1E

Channel breakdown

R27
G30
B33
Red27 (10.6%)
Green30 (11.8%)
Blue33 (12.9%)
Hue210°
Saturation (HSL)10%
Lightness11.76%
Dominant channelBlue
Hex per channelR 1B · G 1E · B 21

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Every value on this page was computed from “1b1e21” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.