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Recognised as Colour

#2A275D

  • #2A275D
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2A275D is a blue with RGB values 42, 39, 93 and HSL 243°, 41%, 26%. It is a dark colour, so white text on it reaches 13.6:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2A275D#2A275D
HEX#2A275D
RGBrgb(42, 39, 93)
RGB (0–1)0.1647, 0.1529, 0.3647
RGB percentages16.5%, 15.3%, 36.5%
HSLhsl(243.3, 40.9%, 25.9%)
HSV / HSBhsv(243.3, 58.1%, 36.5%)
CMYK54.8%, 58.1%, 0%, 63.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,762,589
CSS custom property--colour: #2A275D;

Brightness & contrast

Relative luminance0.02734WCAG 2.x, 0 is black and 1 is white
Perceived brightness49.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.58:1
Contrast with white13.58:1WCAG normal text: AAA
Contrast with black1.55:1WCAG normal text: Fail
Greyscale equivalent#2C2C2C
Inverted#D5D8A2

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#08305Fno red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#032C5Cno green cones; the most common form, about 1% of men; ΔE 10.5 from the original
Tritanopia#16333Dno blue cones; rare, and affects men and women equally; ΔE 34 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.58:1WCAG large text: AAA
Contrast with black, large text1.55:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17.5Midnight blue · ΔE 22.4Rebecca purple · ΔE 32.2Indigo · ΔE 39.7Steel blue · ΔE 40.2Slate blue · ΔE 41
Nearest named CSS colourDark slateblue (#483D8B)ΔE 17.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5A5D27
Analogous#273F5D, #45275D
Triadic#5D2A27, #275D2A
Split complementary#5D4527, #3F5D27
Tetradic#5D273F, #5A5D27, #275D45

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8884CC
Lighter +30%#6660BD
Lighter +20%#4A45A5
Lighter +10%#3A3681
Darker −10%#1A1839
Darker −20%#0A0915
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1B166D
Less saturated −25%#39374C

Channel breakdown

R42
G39
B93
Red42 (16.5%)
Green39 (15.3%)
Blue93 (36.5%)
Hue243.33°
Saturation (HSL)40.91%
Lightness25.88%
Dominant channelBlue
Hex per channelR 2A · G 27 · B 5D

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Every value on this page was computed from “2a275d” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.