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Recognised as Colour

#191B3C

  • #191B3C
  • Blue
  • Dark
  • Nearest: Black

#191B3C is a blue with RGB values 25, 27, 60 and HSL 237°, 41%, 17%. It is a dark colour, so white text on it reaches 16.6:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#191B3C#191B3C
HEX#191B3C
RGBrgb(25, 27, 60)
RGB (0–1)0.098, 0.1059, 0.2353
RGB percentages9.8%, 10.6%, 23.5%
HSLhsl(236.6, 41.2%, 16.7%)
HSV / HSBhsv(236.6, 58.3%, 23.5%)
CMYK58.3%, 55%, 0%, 76.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,645,372
CSS custom property--colour: #191B3C;

Brightness & contrast

Relative luminance0.01317WCAG 2.x, 0 is black and 1 is white
Perceived brightness32 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.62:1
Contrast with white16.62:1WCAG normal text: AAA
Contrast with black1.26:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E6E4C3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0C203Dno red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#091D3Bno green cones; the most common form, about 1% of men; ΔE 5.6 from the original
Tritanopia#0B2228no blue cones; rare, and affects men and women equally; ΔE 22.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.62:1WCAG large text: AAA
Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Black · ΔE 26.5Dark slateblue · ΔE 32.3Dark slate grey · ΔE 34.6Midnight blue · ΔE 35.5Dim grey · ΔE 40.8Slate grey · ΔE 44.7
Nearest named CSS colourBlack (#000000)ΔE 26.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3C3A19
Analogous#192D3C, #28193C
Triadic#3C191B, #1B3C19
Split complementary#3C2819, #2D3C19
Tetradic#3C192D, #3C3A19, #193C28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6368BE
Lighter +30%#464CA8
Lighter +20%#373B84
Lighter +10%#282B60
Darker −10%#0A0B18
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0E1247
Less saturated −25%#242431

Channel breakdown

R25
G27
B60
Red25 (9.8%)
Green27 (10.6%)
Blue60 (23.5%)
Hue236.57°
Saturation (HSL)41.18%
Lightness16.67%
Dominant channelBlue
Hex per channelR 19 · G 1B · B 3C

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Every value on this page was computed from “191b3c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.