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Recognised as Colour

#63BBB3

  • #63BBB3
  • Cyan
  • Dark
  • Nearest: Light seagreen

#63BBB3 is a cyan with RGB values 99, 187, 179 and HSL 175°, 39%, 56%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Light seagreen.

Colour values

#63BBB3#63BBB3
HEX#63BBB3
RGBrgb(99, 187, 179)
RGB (0–1)0.3882, 0.7333, 0.702
RGB percentages38.8%, 73.3%, 70.2%
HSLhsl(174.5, 39.3%, 56.1%)
HSV / HSBhsv(174.5, 47.1%, 73.3%)
CMYK47.1%, 0%, 4.3%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,536,115
CSS custom property--colour: #63BBB3;

Brightness & contrast

Relative luminance0.41448WCAG 2.x, 0 is black and 1 is white
Perceived brightness164.7 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#A8A8A8
Inverted#9C444C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#B3B3B3no red cones; affects about 1% of men; ΔE 28.8 from the original
Deuteranopia#A4A8B4no green cones; the most common form, about 1% of men; ΔE 29.6 from the original
Tritanopia#37BFB8no blue cones; rare, and affects men and women equally; ΔE 9 from the original
Distinguishable without hueYesnever 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

Light seagreen · ΔE 10.5Medium turquoise · ΔE 11.8Cadetblue · ΔE 13.2Dark turquoise · ΔE 15.7Medium aquamarine · ΔE 16.7Turquoise · ΔE 19
Nearest named CSS colourLight seagreen (#20B2AA)ΔE 10.46, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB636B
Analogous#63BB87, #6397BB
Triadic#B363BB, #BBB363
Split complementary#BB6397, #BB8763
Tetradic#8763BB, #BB636B, #97BB63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F1F9F8
Lighter +30%#CEE9E7
Lighter +20%#AADAD6
Lighter +10%#87CAC4
Darker −10%#47A49B
Darker −20%#38807A
Darker −30%#285D58
Darker −40%#193936
More saturated +25%#47D7CA
Less saturated −25%#7F9F9C

Channel breakdown

R99
G187
B179
Red99 (38.8%)
Green187 (73.3%)
Blue179 (70.2%)
Hue174.55°
Saturation (HSL)39.29%
Lightness56.08%
Dominant channelGreen
Hex per channelR 63 · G BB · B B3

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Every value on this page was computed from “63bbb3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.