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Recognised as Colour

#42BCCB

  • #42BCCB
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#42BCCB is a cyan with RGB values 66, 188, 203 and HSL 187°, 57%, 53%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#42BCCB#42BCCB
HEX#42BCCB
RGBrgb(66, 188, 203)
RGB (0–1)0.2588, 0.7373, 0.7961
RGB percentages25.9%, 73.7%, 79.6%
HSLhsl(186.6, 56.8%, 52.7%)
HSV / HSBhsv(186.6, 67.5%, 79.6%)
CMYK67.5%, 7.4%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,373,707
CSS custom property--colour: #42BCCB;

Brightness & contrast

Relative luminance0.41436WCAG 2.x, 0 is black and 1 is white
Perceived brightness163.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.29:1
Contrast with white2.26:1WCAG normal text: Fail
Contrast with black9.29:1WCAG normal text: AAA
Greyscale equivalent#A3A3A3
Inverted#BD4334

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#ADB5CCno red cones; affects about 1% of men; ΔE 31 from the original
Deuteranopia#99A6CBno green cones; the most common form, about 1% of men; ΔE 32.4 from the original
Tritanopia#00C4C0no blue cones; rare, and affects men and women equally; ΔE 14.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.26:1WCAG large text: Fail
Contrast with black, large text9.29:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 13.1Medium turquoise · ΔE 14.2Light seagreen · ΔE 15Cadetblue · ΔE 16.3Sky blue · ΔE 16.7Dark cyan · ΔE 20.2
Nearest named CSS colourDark turquoise (#00CED1)ΔE 13.05, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB5142
Analogous#42CB95, #4278CB
Triadic#CB42BC, #BCCB42
Split complementary#CB4278, #CB9542
Tetradic#9542CB, #CB5142, #78CB42

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E2F5F7
Lighter +30%#BAE7EC
Lighter +20%#92D8E1
Lighter +10%#6ACAD6
Darker −10%#2F9DAB
Darker −20%#247983
Darker −30%#19545B
Darker −40%#0E2F33
More saturated +25%#24D4E9
Less saturated −25%#60A4AD

Channel breakdown

R66
G188
B203
Red66 (25.9%)
Green188 (73.7%)
Blue203 (79.6%)
Hue186.57°
Saturation (HSL)56.85%
Lightness52.75%
Dominant channelBlue
Hex per channelR 42 · G BC · B CB

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