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Recognised as Colour

#2D4E51

  • #2D4E51
  • Cyan
  • Dark
  • Nearest: Dark slate grey

#2D4E51 is a cyan with RGB values 45, 78, 81 and HSL 185°, 29%, 25%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2D4E51#2D4E51
HEX#2D4E51
RGBrgb(45, 78, 81)
RGB (0–1)0.1765, 0.3059, 0.3176
RGB percentages17.6%, 30.6%, 31.8%
HSLhsl(185, 28.6%, 24.7%)
HSV / HSBhsv(185, 44.4%, 31.8%)
CMYK44.4%, 3.7%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,969,169
CSS custom property--colour: #2D4E51;

Brightness & contrast

Relative luminance0.06601WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.05:1
Contrast with white9.05:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#474747
Inverted#D2B1AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#494B51no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#434751no green cones; the most common form, about 1% of men; ΔE 12 from the original
Tritanopia#1D504Fno blue cones; rare, and affects men and women equally; ΔE 6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.05:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 2Dim grey · ΔE 18.4Slate grey · ΔE 24.3Teal · ΔE 25Gray · ΔE 25.9Light slate grey · ΔE 27.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 1.97, below the just-noticeable difference
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#51302D
Analogous#2D5142, #2D3C51
Triadic#512D4E, #4E512D
Split complementary#512D3C, #51422D
Tetradic#422D51, #51302D, #3C512D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8BBABF
Lighter +30%#6AA7AC
Lighter +20%#518D93
Lighter +10%#3F6E72
Darker −10%#1B2E30
Darker −20%#090F0F
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1D5B61
Less saturated −25%#3D4141

Channel breakdown

R45
G78
B81
Red45 (17.6%)
Green78 (30.6%)
Blue81 (31.8%)
Hue185°
Saturation (HSL)28.57%
Lightness24.71%
Dominant channelBlue
Hex per channelR 2D · G 4E · B 51

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Every value on this page was computed from “2d4e51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.