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Recognised as Colour

#33A3D1

  • #33A3D1
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#33A3D1 is a cyan with RGB values 51, 163, 209 and HSL 197°, 63%, 51%. It is a dark colour, so black text on it reaches 7.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#33A3D1#33A3D1
HEX#33A3D1
RGBrgb(51, 163, 209)
RGB (0–1)0.2, 0.6392, 0.8196
RGB percentages20%, 63.9%, 82%
HSLhsl(197.5, 63.2%, 51%)
HSV / HSBhsv(197.5, 75.6%, 82%)
CMYK75.6%, 22%, 0%, 18%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,384,273
CSS custom property--colour: #33A3D1;

Brightness & contrast

Relative luminance0.31502WCAG 2.x, 0 is black and 1 is white
Perceived brightness146.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.3:1
Contrast with white2.88:1WCAG normal text: Fail
Contrast with black7.3:1WCAG normal text: AAA
Greyscale equivalent#8F8F8F
Inverted#CC5C2E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8BA1D3no red cones; affects about 1% of men; ΔE 20.8 from the original
Deuteranopia#7692D0no green cones; the most common form, about 1% of men; ΔE 22.3 from the original
Tritanopia#00B0B2no blue cones; rare, and affects men and women equally; ΔE 28.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.88:1WCAG large text: Fail
Contrast with black, large text7.3:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 14.1Steel blue · ΔE 15.7Light skyblue · ΔE 17.9Sky blue · ΔE 19.7Cadetblue · ΔE 25.3Light slate grey · ΔE 26.1
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 14.15, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D16133
Analogous#33D1B0, #3354D1
Triadic#D133A3, #A3D133
Split complementary#D13354, #D1B033
Tetradic#B033D1, #D16133, #54D133

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D9EEF7
Lighter +30%#B0DBED
Lighter +20%#86C9E4
Lighter +10%#5DB6DA
Darker −10%#2684AB
Darker −20%#1D6481
Darker −30%#144457
Darker −40%#0A232E
More saturated +25%#14B0F0
Less saturated −25%#5296B2

Channel breakdown

R51
G163
B209
Red51 (20%)
Green163 (63.9%)
Blue209 (82%)
Hue197.47°
Saturation (HSL)63.2%
Lightness50.98%
Dominant channelBlue
Hex per channelR 33 · G A3 · B D1

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Every value on this page was computed from “33a3d1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.