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Colour

#152C81

  • #152C81
  • Blue
  • Dark
  • Nearest: Midnight blue

#152C81 is a blue with RGB values 21, 44, 129 and HSL 227°, 72%, 29%. It is a dark colour, so white text on it reaches 12.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#152C81#152C81
HEX#152C81
RGBrgb(21, 44, 129)
RGB (0–1)0.0824, 0.1725, 0.5059
RGB percentages8.2%, 17.3%, 50.6%
HSLhsl(227.2, 72%, 29.4%)
HSV / HSBhsv(227.2, 83.7%, 50.6%)
CMYK83.7%, 65.9%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,387,649
CSS custom property--colour: #152C81;

Brightness & contrast

Relative luminance0.03546WCAG 2.x, 0 is black and 1 is white
Perceived brightness56.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.29:1
Contrast with white12.29:1WCAG normal text: AAA
Contrast with black1.71:1WCAG normal text: Fail
Greyscale equivalent#2D2D2D
Inverted#EAD37E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003A84no red cones; affects about 1% of men; ΔE 11.5 from the original
Deuteranopia#00307Fno green cones; the most common form, about 1% of men; ΔE 5.4 from the original
Tritanopia#004252no blue cones; rare, and affects men and women equally; ΔE 51.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.29:1WCAG large text: AAA
Contrast with black, large text1.71:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9Dark slateblue · ΔE 11.9Rebecca purple · ΔE 20.9Indigo · ΔE 26.7Slate blue · ΔE 26.7Navy · ΔE 28.1
Nearest named CSS colourMidnight blue (#191970)ΔE 9.04, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#816A15
Analogous#156281, #341581
Triadic#81152C, #2C8115
Split complementary#813415, #628115
Tetradic#811562, #816A15, #158134

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7991E9
Lighter +30%#4D6DE2
Lighter +20%#234AD9
Lighter +10%#1C3BAD
Darker −10%#0E1D55
Darker −20%#070E29
Darker −30%#000000
Darker −40%#000000
More saturated +25%#022194
Less saturated −25%#28376E

Channel breakdown

R21
G44
B129
Red21 (8.2%)
Green44 (17.3%)
Blue129 (50.6%)
Hue227.22°
Saturation (HSL)72%
Lightness29.41%
Dominant channelBlue
Hex per channelR 15 · G 2C · B 81

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Every value on this page was computed from “152c81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.