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Recognised as Colour

#2A3858

  • #2A3858
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2A3858 is a blue with RGB values 42, 56, 88 and HSL 222°, 35%, 25%. It is a dark colour, so white text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2A3858#2A3858
HEX#2A3858
RGBrgb(42, 56, 88)
RGB (0–1)0.1647, 0.2196, 0.3451
RGB percentages16.5%, 22%, 34.5%
HSLhsl(221.7, 35.4%, 25.5%)
HSV / HSBhsv(221.7, 52.3%, 34.5%)
CMYK52.3%, 36.4%, 0%, 65.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,766,936
CSS custom property--colour: #2A3858;

Brightness & contrast

Relative luminance0.04025WCAG 2.x, 0 is black and 1 is white
Perceived brightness57 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.63:1
Contrast with white11.63:1WCAG normal text: AAA
Contrast with black1.81:1WCAG normal text: Fail
Greyscale equivalent#373737
Inverted#D5C7A7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#2C3B59no red cones; affects about 1% of men; ΔE 2 from the original
Deuteranopia#273757no green cones; the most common form, about 1% of men; ΔE 0.8 from the original
Tritanopia#173F44no blue cones; rare, and affects men and women equally; ΔE 21.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.63:1WCAG large text: AAA
Contrast with black, large text1.81:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 24.9Dim grey · ΔE 29.8Dark slateblue · ΔE 31Slate grey · ΔE 31.6Steel blue · ΔE 31.9Black · ΔE 32.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 24.85, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#584A2A
Analogous#2A4F58, #332A58
Triadic#582A38, #38582A
Split complementary#58332A, #4F582A
Tetradic#582A4F, #584A2A, #2A5833

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#889BC6
Lighter +30%#657EB6
Lighter +20%#4B649D
Lighter +10%#3A4E7B
Darker −10%#1A2235
Darker −20%#090C13
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1A3268
Less saturated −25%#3A3E48

Channel breakdown

R42
G56
B88
Red42 (16.5%)
Green56 (22%)
Blue88 (34.5%)
Hue221.74°
Saturation (HSL)35.38%
Lightness25.49%
Dominant channelBlue
Hex per channelR 2A · G 38 · B 58

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Every value on this page was computed from “2a3858” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.