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Recognised as Colour

#1D1981

  • #1D1981
  • Blue
  • Dark
  • Nearest: Midnight blue

#1D1981 is a blue with RGB values 29, 25, 129 and HSL 242°, 68%, 30%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1D1981#1D1981
HEX#1D1981
RGBrgb(29, 25, 129)
RGB (0–1)0.1137, 0.098, 0.5059
RGB percentages11.4%, 9.8%, 50.6%
HSLhsl(242.3, 67.5%, 30.2%)
HSV / HSBhsv(242.3, 80.6%, 50.6%)
CMYK77.5%, 80.6%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,907,073
CSS custom property--colour: #1D1981;

Brightness & contrast

Relative luminance0.02541WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.92:1
Contrast with white13.92:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#212121
Inverted#E2E67E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003184no red cones; affects about 1% of men; ΔE 18.4 from the original
Deuteranopia#00277Fno green cones; the most common form, about 1% of men; ΔE 12.4 from the original
Tritanopia#00394Dno blue cones; rare, and affects men and women equally; ΔE 61.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.92:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.8Navy · ΔE 13.4Indigo · ΔE 14.3Dark blue · ΔE 17.5Rebecca purple · ΔE 18.3Dark slateblue · ΔE 22.8
Nearest named CSS colourMidnight blue (#191970)ΔE 9.82, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7D8119
Analogous#194981, #511981
Triadic#811D19, #19811D
Split complementary#815119, #498119
Tetradic#811949, #7D8119, #198151

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8480E6
Lighter +30%#5A55DE
Lighter +20%#312AD6
Lighter +10%#2721AC
Darker −10%#131156
Darker −20%#0A082C
Darker −30%#000001
Darker −40%#000000
More saturated +25%#0B0694
Less saturated −25%#2F2C6E

Channel breakdown

R29
G25
B129
Red29 (11.4%)
Green25 (9.8%)
Blue129 (50.6%)
Hue242.31°
Saturation (HSL)67.53%
Lightness30.2%
Dominant channelBlue
Hex per channelR 1D · G 19 · B 81

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Every value on this page was computed from “1d1981” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.