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Colour

#28487C

  • #28487C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#28487C is a blue with RGB values 40, 72, 124 and HSL 217°, 51%, 32%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#28487C#28487C
HEX#28487C
RGBrgb(40, 72, 124)
RGB (0–1)0.1569, 0.2824, 0.4863
RGB percentages15.7%, 28.2%, 48.6%
HSLhsl(217.1, 51.2%, 32.2%)
HSV / HSBhsv(217.1, 67.7%, 48.6%)
CMYK67.7%, 41.9%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,639,996
CSS custom property--colour: #28487C;

Brightness & contrast

Relative luminance0.06541WCAG 2.x, 0 is black and 1 is white
Perceived brightness72.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.1:1
Contrast with white9.1:1WCAG normal text: AAA
Contrast with black2.31:1WCAG normal text: Fail
Greyscale equivalent#454545
Inverted#D7B783

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#314D7Eno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#24457Bno green cones; the most common form, about 1% of men; ΔE 1.9 from the original
Tritanopia#00545Cno blue cones; rare, and affects men and women equally; ΔE 33.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.1:1WCAG large text: AAA
Contrast with black, large text2.31:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 21.6Steel blue · ΔE 24.1Slate grey · ΔE 32.7Midnight blue · ΔE 33.7Dark slate grey · ΔE 34.5Light slate grey · ΔE 34.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 21.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C5C28
Analogous#28727C, #32287C
Triadic#7C2848, #487C28
Split complementary#7C3228, #727C28
Tetradic#7C2872, #7C5C28, #287C32

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94AFDC
Lighter +30%#6D93D0
Lighter +20%#4776C3
Lighter +10%#345EA3
Darker −10%#1C3255
Darker −20%#0F1B2F
Darker −30%#030508
Darker −40%#000000
More saturated +25%#134391
Less saturated −25%#3D4D68

Channel breakdown

R40
G72
B124
Red40 (15.7%)
Green72 (28.2%)
Blue124 (48.6%)
Hue217.14°
Saturation (HSL)51.22%
Lightness32.16%
Dominant channelBlue
Hex per channelR 28 · G 48 · B 7C

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Every value on this page was computed from “28487c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.