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Recognised as Colour

#151D5E

  • #151D5E
  • Blue
  • Dark
  • Nearest: Midnight blue

#151D5E is a blue with RGB values 21, 29, 94 and HSL 233°, 63%, 23%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#151D5E#151D5E
HEX#151D5E
RGBrgb(21, 29, 94)
RGB (0–1)0.0824, 0.1137, 0.3686
RGB percentages8.2%, 11.4%, 36.9%
HSLhsl(233.4, 63.5%, 22.5%)
HSV / HSBhsv(233.4, 77.7%, 36.9%)
CMYK77.7%, 69.1%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,383,774
CSS custom property--colour: #151D5E;

Brightness & contrast

Relative luminance0.01846WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.34:1
Contrast with white15.34:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#202020
Inverted#EAE2A1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002860no red cones; affects about 1% of men; ΔE 10.2 from the original
Deuteranopia#00225Dno green cones; the most common form, about 1% of men; ΔE 6.5 from the original
Tritanopia#002E3Ano blue cones; rare, and affects men and women equally; ΔE 42 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.34:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.1Dark slateblue · ΔE 16.9Rebecca purple · ΔE 28.9Indigo · ΔE 33.4Navy · ΔE 36Slate blue · ΔE 38.4
Nearest named CSS colourMidnight blue (#191970)ΔE 14.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E5615
Analogous#15425E, #31155E
Triadic#5E151D, #1D5E15
Split complementary#5E3115, #425E15
Tetradic#5E1542, #5E5615, #155E31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6370DC
Lighter +30%#394AD3
Lighter +20%#2837B1
Lighter +10%#1E2A88
Darker −10%#0C1034
Darker −20%#02030B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07126C
Less saturated −25%#232850

Channel breakdown

R21
G29
B94
Red21 (8.2%)
Green29 (11.4%)
Blue94 (36.9%)
Hue233.42°
Saturation (HSL)63.48%
Lightness22.55%
Dominant channelBlue
Hex per channelR 15 · G 1D · B 5E

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Every value on this page was computed from “151d5e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.