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Recognised as Colour

#152D5C

  • #152D5C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#152D5C is a blue with RGB values 21, 45, 92 and HSL 220°, 63%, 22%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#152D5C#152D5C
HEX#152D5C
RGBrgb(21, 45, 92)
RGB (0–1)0.0824, 0.1765, 0.3608
RGB percentages8.2%, 17.6%, 36.1%
HSLhsl(219.7, 62.8%, 22.2%)
HSV / HSBhsv(219.7, 77.2%, 36.1%)
CMYK77.2%, 51.1%, 0%, 63.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,387,868
CSS custom property--colour: #152D5C;

Brightness & contrast

Relative luminance0.02809WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.45:1
Contrast with white13.45:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#2B2B2B
Inverted#EAD2A3

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#14325Eno red cones; affects about 1% of men; ΔE 3.7 from the original
Deuteranopia#032C5Bno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#003840no blue cones; rare, and affects men and women equally; ΔE 30.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.45:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.4Midnight blue · ΔE 29.5Steel blue · ΔE 35.8Dark slate grey · ΔE 36.3Black · ΔE 37.5Rebecca purple · ΔE 39.9
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.36, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5C4415
Analogous#15515C, #21155C
Triadic#5C152D, #2D5C15
Split complementary#5C2115, #505C15
Tetradic#5C1550, #5C4415, #155C21

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#628BDB
Lighter +30%#386CD2
Lighter +20%#2856AF
Lighter +10%#1E4186
Darker −10%#0C1932
Darker −20%#020409
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07286A
Less saturated −25%#23324E

Channel breakdown

R21
G45
B92
Red21 (8.2%)
Green45 (17.6%)
Blue92 (36.1%)
Hue219.72°
Saturation (HSL)62.83%
Lightness22.16%
Dominant channelBlue
Hex per channelR 15 · G 2D · B 5C

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Every value on this page was computed from “152d5c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.