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Recognised as Colour

#152A81

  • #152A81
  • Blue
  • Dark
  • Nearest: Midnight blue

#152A81 is a blue with RGB values 21, 42, 129 and HSL 228°, 72%, 29%. It is a dark colour, so white text on it reaches 12.5:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#152A81#152A81
HEX#152A81
RGBrgb(21, 42, 129)
RGB (0–1)0.0824, 0.1647, 0.5059
RGB percentages8.2%, 16.5%, 50.6%
HSLhsl(228.3, 72%, 29.4%)
HSV / HSBhsv(228.3, 83.7%, 50.6%)
CMYK83.7%, 67.4%, 0%, 49.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,387,137
CSS custom property--colour: #152A81;

Brightness & contrast

Relative luminance0.034WCAG 2.x, 0 is black and 1 is white
Perceived brightness55.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.5:1
Contrast with white12.5:1WCAG normal text: AAA
Contrast with black1.68:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#EAD57E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003984no red cones; affects about 1% of men; ΔE 12.3 from the original
Deuteranopia#002F7Fno green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#004151no blue cones; rare, and affects men and women equally; ΔE 52.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.5:1WCAG large text: AAA
Contrast with black, large text1.68:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 7.8Dark slateblue · ΔE 12.9Rebecca purple · ΔE 20.2Indigo · ΔE 25.2Navy · ΔE 26.4Slate blue · ΔE 26.4
Nearest named CSS colourMidnight blue (#191970)ΔE 7.82, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#816C15
Analogous#156081, #361581
Triadic#81152A, #2A8115
Split complementary#813615, #608115
Tetradic#811560, #816C15, #158136

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#798FE9
Lighter +30%#4D6AE2
Lighter +20%#2347D9
Lighter +10%#1C38AD
Darker −10%#0E1C55
Darker −20%#070D29
Darker −30%#000000
Darker −40%#000000
More saturated +25%#021F94
Less saturated −25%#28356E

Channel breakdown

R21
G42
B129
Red21 (8.2%)
Green42 (16.5%)
Blue129 (50.6%)
Hue228.33°
Saturation (HSL)72%
Lightness29.41%
Dominant channelBlue
Hex per channelR 15 · G 2A · B 81

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Every value on this page was computed from “152a81” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.