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Recognised as Colour

#1D2975

  • #1D2975
  • Blue
  • Dark
  • Nearest: Midnight blue

#1D2975 is a blue with RGB values 29, 41, 117 and HSL 232°, 60%, 29%. It is a dark colour, so white text on it reaches 12.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#1D2975#1D2975
HEX#1D2975
RGBrgb(29, 41, 117)
RGB (0–1)0.1137, 0.1608, 0.4588
RGB percentages11.4%, 16.1%, 45.9%
HSLhsl(231.8, 60.3%, 28.6%)
HSV / HSBhsv(231.8, 75.2%, 45.9%)
CMYK75.2%, 65%, 0%, 54.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,911,157
CSS custom property--colour: #1D2975;

Brightness & contrast

Relative luminance0.03131WCAG 2.x, 0 is black and 1 is white
Perceived brightness52.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.91:1
Contrast with white12.91:1WCAG normal text: AAA
Contrast with black1.63:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#E2D68A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003677no red cones; affects about 1% of men; ΔE 12.1 from the original
Deuteranopia#002E74no green cones; the most common form, about 1% of men; ΔE 6.7 from the original
Tritanopia#003D4Bno blue cones; rare, and affects men and women equally; ΔE 47.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text12.91:1WCAG large text: AAA
Contrast with black, large text1.63:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.5Dark slateblue · ΔE 11Rebecca purple · ΔE 23.1Indigo · ΔE 29.4Slate blue · ΔE 30.6Navy · ΔE 32
Nearest named CSS colourMidnight blue (#191970)ΔE 10.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#75691D
Analogous#1D5575, #3D1D75
Triadic#751D29, #29751D
Split complementary#753D1D, #55751D
Tetradic#751D55, #75691D, #1D753D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7F8CDF
Lighter +30%#5667D5
Lighter +20%#3146C7
Lighter +10%#27379E
Darker −10%#131B4C
Darker −20%#090C23
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0B1C87
Less saturated −25%#2F3663

Channel breakdown

R29
G41
B117
Red29 (11.4%)
Green41 (16.1%)
Blue117 (45.9%)
Hue231.82°
Saturation (HSL)60.27%
Lightness28.63%
Dominant channelBlue
Hex per channelR 1D · G 29 · B 75

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Every value on this page was computed from “1d2975” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.