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Recognised as Colour

#15275F

  • #15275F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#15275F is a blue with RGB values 21, 39, 95 and HSL 225°, 64%, 23%. It is a dark colour, so white text on it reaches 14.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#15275F#15275F
HEX#15275F
RGBrgb(21, 39, 95)
RGB (0–1)0.0824, 0.1529, 0.3725
RGB percentages8.2%, 15.3%, 37.3%
HSLhsl(225.4, 63.8%, 22.7%)
HSV / HSBhsv(225.4, 77.9%, 37.3%)
CMYK77.9%, 58.9%, 0%, 62.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,386,335
CSS custom property--colour: #15275F;

Brightness & contrast

Relative luminance0.02437WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.12:1
Contrast with white14.12:1WCAG normal text: AAA
Contrast with black1.49:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#EAD8A0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002F61no red cones; affects about 1% of men; ΔE 7.8 from the original
Deuteranopia#00285Eno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#00353Eno blue cones; rare, and affects men and women equally; ΔE 37.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.12:1WCAG large text: AAA
Contrast with black, large text1.49:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 18.5Midnight blue · ΔE 22.1Rebecca purple · ΔE 34Steel blue · ΔE 39.8Indigo · ΔE 41Slate blue · ΔE 41.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 18.54, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5F4D15
Analogous#154C5F, #28155F
Triadic#5F1527, #275F15
Split complementary#5F2815, #4C5F15
Tetradic#5F154C, #5F4D15, #155F28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6381DD
Lighter +30%#3A5FD3
Lighter +20%#2749B3
Lighter +10%#1E3889
Darker −10%#0C1635
Darker −20%#03050B
Darker −30%#000000
Darker −40%#000000
More saturated +25%#07206E
Less saturated −25%#232E51

Channel breakdown

R21
G39
B95
Red21 (8.2%)
Green39 (15.3%)
Blue95 (37.3%)
Hue225.41°
Saturation (HSL)63.79%
Lightness22.75%
Dominant channelBlue
Hex per channelR 15 · G 27 · B 5F

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Every value on this page was computed from “15275f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.