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Recognised as Colour

#1BCDEF

  • #1BCDEF
  • Cyan
  • Light
  • Nearest: Sky blue

#1BCDEF is a cyan with RGB values 27, 205, 239 and HSL 190°, 87%, 52%. It is a light colour, so black text on it reaches 11:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#1BCDEF#1BCDEF
HEX#1BCDEF
RGBrgb(27, 205, 239)
RGB (0–1)0.1059, 0.8039, 0.9373
RGB percentages10.6%, 80.4%, 93.7%
HSLhsl(189.6, 86.9%, 52.2%)
HSV / HSBhsv(189.6, 88.7%, 93.7%)
CMYK88.7%, 14.2%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,822,191
CSS custom property--colour: #1BCDEF;

Brightness & contrast

Relative luminance0.50128WCAG 2.x, 0 is black and 1 is white
Perceived brightness177.2 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 11.03:1
Contrast with white1.9:1WCAG normal text: Fail
Contrast with black11.03:1WCAG normal text: AAA
Greyscale equivalent#AAAAAA
Inverted#E43210

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B6C6F1no red cones; affects about 1% of men; ΔE 33.7 from the original
Deuteranopia#9CB4EFno green cones; the most common form, about 1% of men; ΔE 35.2 from the original
Tritanopia#00D9D8no blue cones; rare, and affects men and women equally; ΔE 21.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.9:1WCAG large text: Fail
Contrast with black, large text11.03:1WCAG large text: AAA

Named colours

Sky blue · ΔE 16.4Dark turquoise · ΔE 18.3Deep skyblue · ΔE 18.7Light skyblue · ΔE 18.8Medium turquoise · ΔE 21.6Light seagreen · ΔE 25.7
Nearest named CSS colourSky blue (#87CEEB)ΔE 16.39, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EF3D1B
Analogous#1BEFA7, #1B63EF
Triadic#EF1BCD, #CDEF1B
Split complementary#EF1B63, #EFA71B
Tetradic#A71BEF, #EF3D1B, #63EF1B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAF7FC
Lighter +30%#AAECF9
Lighter +20%#7AE2F6
Lighter +10%#4BD7F2
Darker −10%#0EABC9
Darker −20%#0B8299
Darker −30%#075A6A
Darker −40%#04313A
More saturated +25%#0BD8FF
Less saturated −25%#3AB8D1

Channel breakdown

R27
G205
B239
Red27 (10.6%)
Green205 (80.4%)
Blue239 (93.7%)
Hue189.62°
Saturation (HSL)86.89%
Lightness52.16%
Dominant channelBlue
Hex per channelR 1B · G CD · B EF

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Every value on this page was computed from “1bcdef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.