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Recognised as Colour

#2A4489

  • #2A4489
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2A4489 is a blue with RGB values 42, 68, 137 and HSL 224°, 53%, 35%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A4489#2A4489
HEX#2A4489
RGBrgb(42, 68, 137)
RGB (0–1)0.1647, 0.2667, 0.5373
RGB percentages16.5%, 26.7%, 53.7%
HSLhsl(223.6, 53.1%, 35.1%)
HSV / HSBhsv(223.6, 69.3%, 53.7%)
CMYK69.3%, 50.4%, 0%, 46.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,770,057
CSS custom property--colour: #2A4489;

Brightness & contrast

Relative luminance0.06433WCAG 2.x, 0 is black and 1 is white
Perceived brightness73.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.18:1
Contrast with white9.18:1WCAG normal text: AAA
Contrast with black2.29:1WCAG normal text: Fail
Greyscale equivalent#434343
Inverted#D5BB76

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1E4C8Cno red cones; affects about 1% of men; ΔE 6.6 from the original
Deuteranopia#044488no green cones; the most common form, about 1% of men; ΔE 4.8 from the original
Tritanopia#005460no blue cones; rare, and affects men and women equally; ΔE 42.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.18:1WCAG large text: AAA
Contrast with black, large text2.29:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 11.6Midnight blue · ΔE 24Rebecca purple · ΔE 29.1Steel blue · ΔE 30.2Slate blue · ΔE 30.8Royal blue · ΔE 31.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 11.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#896F2A
Analogous#2A7489, #402A89
Triadic#892A44, #44892A
Split complementary#893F2A, #74892A
Tetradic#892A73, #896F2A, #2A893F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9EB0E1
Lighter +30%#7791D5
Lighter +20%#5071C9
Lighter +10%#3657B0
Darker −10%#1E3162
Darker −20%#121D3B
Darker −30%#060A14
Darker −40%#000000
More saturated +25%#143A9F
Less saturated −25%#404E73

Channel breakdown

R42
G68
B137
Red42 (16.5%)
Green68 (26.7%)
Blue137 (53.7%)
Hue223.58°
Saturation (HSL)53.07%
Lightness35.1%
Dominant channelBlue
Hex per channelR 2A · G 44 · B 89

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Every value on this page was computed from “2a4489” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.