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Recognised as Colour

#28437C

  • #28437C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#28437C is a blue with RGB values 40, 67, 124 and HSL 221°, 51%, 32%. It is a dark colour, so white text on it reaches 9.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#28437C#28437C
HEX#28437C
RGBrgb(40, 67, 124)
RGB (0–1)0.1569, 0.2627, 0.4863
RGB percentages15.7%, 26.3%, 48.6%
HSLhsl(220.7, 51.2%, 32.2%)
HSV / HSBhsv(220.7, 67.7%, 48.6%)
CMYK67.7%, 46%, 0%, 51.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,638,716
CSS custom property--colour: #28437C;

Brightness & contrast

Relative luminance0.05921WCAG 2.x, 0 is black and 1 is white
Perceived brightness69.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.61:1
Contrast with white9.61:1WCAG normal text: AAA
Contrast with black2.18:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#D7BC83

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#28497Eno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#1A417Bno green cones; the most common form, about 1% of men; ΔE 2.3 from the original
Tritanopia#005059no blue cones; rare, and affects men and women equally; ΔE 36.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.61:1WCAG large text: AAA
Contrast with black, large text2.18:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.6Steel blue · ΔE 27.3Midnight blue · ΔE 29.3Rebecca purple · ΔE 35.3Cornflower blue · ΔE 35.5Slate grey · ΔE 36.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7C6128
Analogous#286D7C, #37287C
Triadic#7C2843, #437C28
Split complementary#7C3728, #6D7C28
Tetradic#7C286D, #7C6128, #287C37

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#94ABDC
Lighter +30%#6D8DD0
Lighter +20%#476FC3
Lighter +10%#3458A3
Darker −10%#1C2E55
Darker −20%#0F192F
Darker −30%#030408
Darker −40%#000000
More saturated +25%#133C91
Less saturated −25%#3D4A68

Channel breakdown

R40
G67
B124
Red40 (15.7%)
Green67 (26.3%)
Blue124 (48.6%)
Hue220.71°
Saturation (HSL)51.22%
Lightness32.16%
Dominant channelBlue
Hex per channelR 28 · G 43 · B 7C

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Every value on this page was computed from “28437c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.