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Colour

#191A4B

  • #191A4B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#191A4B is a blue with RGB values 25, 26, 75 and HSL 239°, 50%, 20%. It is a dark colour, so white text on it reaches 16.3:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#191A4B#191A4B
HEX#191A4B
RGBrgb(25, 26, 75)
RGB (0–1)0.098, 0.102, 0.2941
RGB percentages9.8%, 10.2%, 29.4%
HSLhsl(238.8, 50%, 19.6%)
HSV / HSBhsv(238.8, 66.7%, 29.4%)
CMYK66.7%, 65.3%, 0%, 70.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,645,131
CSS custom property--colour: #191A4B;

Brightness & contrast

Relative luminance0.01453WCAG 2.x, 0 is black and 1 is white
Perceived brightness35 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.27:1
Contrast with white16.27:1WCAG normal text: AAA
Contrast with black1.29:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E6E5B4

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00224Dno red cones; affects about 1% of men; ΔE 9.2 from the original
Deuteranopia#001E4Ano green cones; the most common form, about 1% of men; ΔE 7.3 from the original
Tritanopia#00262Fno blue cones; rare, and affects men and women equally; ΔE 33.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.27:1WCAG large text: AAA
Contrast with black, large text1.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.6Midnight blue · ΔE 24.3Rebecca purple · ΔE 37Black · ΔE 37.1Indigo · ΔE 42.3Dark slate grey · ΔE 43.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4B4A19
Analogous#19334B, #31194B
Triadic#4B191A, #1A4B19
Split complementary#4B3119, #334B19
Tetradic#4B1933, #4B4A19, #194B31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6467CC
Lighter +30%#3F42BE
Lighter +20%#323598
Lighter +10%#262771
Darker −10%#0C0D25
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C0E58
Less saturated −25%#25263F

Channel breakdown

R25
G26
B75
Red25 (9.8%)
Green26 (10.2%)
Blue75 (29.4%)
Hue238.8°
Saturation (HSL)50%
Lightness19.61%
Dominant channelBlue
Hex per channelR 19 · G 1A · B 4B

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Every value on this page was computed from “191a4b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.