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Recognised as Colour

#2A3045

  • #2A3045
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2A3045 is a blue with RGB values 42, 48, 69 and HSL 227°, 24%, 22%. It is a dark colour, so white text on it reaches 13.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2A3045#2A3045
HEX#2A3045
RGBrgb(42, 48, 69)
RGB (0–1)0.1647, 0.1882, 0.2706
RGB percentages16.5%, 18.8%, 27.1%
HSLhsl(226.7, 24.3%, 21.8%)
HSV / HSBhsv(226.7, 39.1%, 27.1%)
CMYK39.1%, 30.4%, 0%, 72.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,764,869
CSS custom property--colour: #2A3045;

Brightness & contrast

Relative luminance0.03036WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.07:1
Contrast with white13.07:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#303030
Inverted#D5CFBA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#293246no red cones; affects about 1% of men; ΔE 1.6 from the original
Deuteranopia#273045no green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#223437no blue cones; rare, and affects men and women equally; ΔE 13.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.07:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 21.4Black · ΔE 24.8Dim grey · ΔE 28.2Slate grey · ΔE 33.3Light slate grey · ΔE 36.3Gray · ΔE 36.4
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 21.43, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#453F2A
Analogous#2A3E45, #312A45
Triadic#452A30, #30452A
Split complementary#45312A, #3E452A
Tetradic#452A3E, #453F2A, #2A4531

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8690B5
Lighter +30%#6673A2
Lighter +20%#515C84
Lighter +10%#3D4665
Darker −10%#171A25
Darker −20%#030406
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1C2853
Less saturated −25%#383838

Channel breakdown

R42
G48
B69
Red42 (16.5%)
Green48 (18.8%)
Blue69 (27.1%)
Hue226.67°
Saturation (HSL)24.32%
Lightness21.76%
Dominant channelBlue
Hex per channelR 2A · G 30 · B 45

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Every value on this page was computed from “2a3045” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.