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Recognised as Colour

#2D3F52

  • #2D3F52
  • Blue
  • Dark
  • Nearest: Dark slate grey

#2D3F52 is a blue with RGB values 45, 63, 82 and HSL 211°, 29%, 25%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#2D3F52#2D3F52
HEX#2D3F52
RGBrgb(45, 63, 82)
RGB (0–1)0.1765, 0.2471, 0.3216
RGB percentages17.6%, 24.7%, 32.2%
HSLhsl(210.8, 29.1%, 24.9%)
HSV / HSBhsv(210.8, 45.1%, 32.2%)
CMYK45.1%, 23.2%, 0%, 67.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,965,330
CSS custom property--colour: #2D3F52;

Brightness & contrast

Relative luminance0.04722WCAG 2.x, 0 is black and 1 is white
Perceived brightness60.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.8:1
Contrast with white10.8:1WCAG normal text: AAA
Contrast with black1.94:1WCAG normal text: Fail
Greyscale equivalent#3D3D3D
Inverted#D2C0AD

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#383F53no red cones; affects about 1% of men; ΔE 4.1 from the original
Deuteranopia#333C52no green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#1F4345no blue cones; rare, and affects men and women equally; ΔE 13.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text10.8:1WCAG large text: AAA
Contrast with black, large text1.94:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 15.3Dim grey · ΔE 23.1Slate grey · ΔE 27.1Black · ΔE 29.4Light slate grey · ΔE 30.1Gray · ΔE 30.9
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 15.31, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#52402D
Analogous#2D5152, #2E2D52
Triadic#522D3F, #3F522D
Split complementary#522E2D, #52522D
Tetradic#522D51, #52402D, #2D522E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8BA5C0
Lighter +30%#6A8BAE
Lighter +20%#517294
Lighter +10%#3F5873
Darker −10%#1B2631
Darker −20%#090C10
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1D3F62
Less saturated −25%#3D3F42

Channel breakdown

R45
G63
B82
Red45 (17.6%)
Green63 (24.7%)
Blue82 (32.2%)
Hue210.81°
Saturation (HSL)29.13%
Lightness24.9%
Dominant channelBlue
Hex per channelR 2D · G 3F · B 52

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Every value on this page was computed from “2d3f52” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.