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Recognised as Colour

#2A518C

  • #2A518C
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2A518C is a blue with RGB values 42, 81, 140 and HSL 216°, 54%, 36%. It is a dark colour, so white text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A518C#2A518C
HEX#2A518C
RGBrgb(42, 81, 140)
RGB (0–1)0.1647, 0.3176, 0.549
RGB percentages16.5%, 31.8%, 54.9%
HSLhsl(216.1, 53.8%, 35.7%)
HSV / HSBhsv(216.1, 70%, 54.9%)
CMYK70%, 42.1%, 0%, 45.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,773,388
CSS custom property--colour: #2A518C;

Brightness & contrast

Relative luminance0.08271WCAG 2.x, 0 is black and 1 is white
Perceived brightness81.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.91:1
Contrast with white7.91:1WCAG normal text: AAA
Contrast with black2.65:1WCAG normal text: Fail
Greyscale equivalent#4D4D4D
Inverted#D5AE73

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#36568Eno red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#264D8Bno green cones; the most common form, about 1% of men; ΔE 2.8 from the original
Tritanopia#005F67no blue cones; rare, and affects men and women equally; ΔE 37.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.91:1WCAG large text: AAA
Contrast with black, large text2.65:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 20.2Steel blue · ΔE 21.5Cornflower blue · ΔE 30.2Slate grey · ΔE 33.3Midnight blue · ΔE 33.6Light slate grey · ΔE 34.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 20.21, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#8C652A
Analogous#2A828C, #342A8C
Triadic#8C2A51, #518C2A
Split complementary#8C342A, #828C2A
Tetradic#8C2A82, #8C652A, #2A8C34

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A0BAE2
Lighter +30%#789ED7
Lighter +20%#5182CB
Lighter +10%#3668B3
Darker −10%#1E3A65
Darker −20%#12243E
Darker −30%#070D16
Darker −40%#000000
More saturated +25%#134CA3
Less saturated −25%#415675

Channel breakdown

R42
G81
B140
Red42 (16.5%)
Green81 (31.8%)
Blue140 (54.9%)
Hue216.12°
Saturation (HSL)53.85%
Lightness35.69%
Dominant channelBlue
Hex per channelR 2A · G 51 · B 8C

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Every value on this page was computed from “2a518c” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.