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Recognised as Colour

#1F1497

  • #1F1497
  • Blue
  • Dark
  • Nearest: Dark blue

#1F1497 is a blue with RGB values 31, 20, 151 and HSL 245°, 77%, 34%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark blue.

Colour values

#1F1497#1F1497
HEX#1F1497
RGBrgb(31, 20, 151)
RGB (0–1)0.1216, 0.0784, 0.5922
RGB percentages12.2%, 7.8%, 59.2%
HSLhsl(245, 76.6%, 33.5%)
HSV / HSBhsv(245, 86.8%, 59.2%)
CMYK79.5%, 86.8%, 0%, 40.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,036,887
CSS custom property--colour: #1F1497;

Brightness & contrast

Relative luminance0.03026WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.08:1
Contrast with white13.08:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#E0EB68

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00379Ano red cones; affects about 1% of men; ΔE 24 from the original
Deuteranopia#002A95no green cones; the most common form, about 1% of men; ΔE 15.8 from the original
Tritanopia#004059no blue cones; rare, and affects men and women equally; ΔE 73 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.08:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark blue · ΔE 6.3Navy · ΔE 7.6Indigo · ΔE 14.4Midnight blue · ΔE 24.1Rebecca purple · ΔE 24.2Slate blue · ΔE 29.3
Nearest named CSS colourDark blue (#00008B)ΔE 6.28, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C9714
Analogous#144A97, #611497
Triadic#971F14, #14971F
Split complementary#976114, #4A9714
Tetradic#97144A, #8C9714, #149761

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9088EF
Lighter +30%#675BE9
Lighter +20%#3D2EE3
Lighter +10%#281AC4
Darker −10%#160E6A
Darker −20%#0D083D
Darker −30%#030210
Darker −40%#000000
More saturated +25%#0E00AB
Less saturated −25%#312982

Channel breakdown

R31
G20
B151
Red31 (12.2%)
Green20 (7.8%)
Blue151 (59.2%)
Hue245.04°
Saturation (HSL)76.61%
Lightness33.53%
Dominant channelBlue
Hex per channelR 1F · G 14 · B 97

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Every value on this page was computed from “1f1497” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.