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Recognised as Colour

#42D3DE

  • #42D3DE
  • Cyan
  • Light
  • Nearest: Dark turquoise

#42D3DE is a cyan with RGB values 66, 211, 222 and HSL 184°, 70%, 56%. It is a light colour, so black text on it reaches 11.6:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#42D3DE#42D3DE
HEX#42D3DE
RGBrgb(66, 211, 222)
RGB (0–1)0.2588, 0.8275, 0.8706
RGB percentages25.9%, 82.7%, 87.1%
HSLhsl(184.2, 70.3%, 56.5%)
HSV / HSBhsv(184.2, 70.3%, 87.1%)
CMYK70.3%, 5%, 0%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,379,614
CSS custom property--colour: #42D3DE;

Brightness & contrast

Relative luminance0.53021WCAG 2.x, 0 is black and 1 is white
Perceived brightness181.8 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.6:1
Contrast with white1.81:1WCAG normal text: Fail
Contrast with black11.6:1WCAG normal text: AAA
Greyscale equivalent#B5B5B5
Inverted#BD2C21

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C3CADFno red cones; affects about 1% of men; ΔE 36.3 from the original
Deuteranopia#ACB9DFno green cones; the most common form, about 1% of men; ΔE 38 from the original
Tritanopia#00DBD6no blue cones; rare, and affects men and women equally; ΔE 12.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.81:1WCAG large text: Fail
Contrast with black, large text11.6:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 7.2Medium turquoise · ΔE 8.9Light seagreen · ΔE 16.2Turquoise · ΔE 16.4Aqua · ΔE 19.5Cyan · ΔE 19.5
Nearest named CSS colourDark turquoise (#00CED1)ΔE 7.22, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DE4D42
Analogous#42DE9B, #4285DE
Triadic#DE42D3, #D3DE42
Split complementary#DE4285, #DE9B42
Tetradic#9B42DE, #DE4D42, #85DE42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F0FBFC
Lighter +30%#C4F1F5
Lighter +20%#99E7ED
Lighter +10%#6DDDE6
Darker −10%#23BECA
Darker −20%#1C959E
Darker −30%#146C73
Darker −40%#0C4348
More saturated +25%#26EBFA
Less saturated −25%#5EBBC2

Channel breakdown

R66
G211
B222
Red66 (25.9%)
Green211 (82.7%)
Blue222 (87.1%)
Hue184.23°
Saturation (HSL)70.27%
Lightness56.47%
Dominant channelBlue
Hex per channelR 42 · G D3 · B DE

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Every value on this page was computed from “42d3de” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.