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Recognised as Colour

#63C1E1

  • #63C1E1
  • Cyan
  • Dark
  • Nearest: Sky blue

#63C1E1 is a cyan with RGB values 99, 193, 225 and HSL 195°, 68%, 64%. It is a dark colour, so black text on it reaches 10.2:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#63C1E1#63C1E1
HEX#63C1E1
RGBrgb(99, 193, 225)
RGB (0–1)0.3882, 0.7569, 0.8824
RGB percentages38.8%, 75.7%, 88.2%
HSLhsl(195.2, 67.7%, 63.5%)
HSV / HSBhsv(195.2, 56%, 88.2%)
CMYK56%, 14.2%, 0%, 11.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,537,697
CSS custom property--colour: #63C1E1;

Brightness & contrast

Relative luminance0.46229WCAG 2.x, 0 is black and 1 is white
Perceived brightness174.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 10.25:1
Contrast with white2.05:1WCAG normal text: Fail
Contrast with black10.25:1WCAG normal text: AAA
Greyscale equivalent#AFAFAF
Inverted#9C3E1E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AFBDE3no red cones; affects about 1% of men; ΔE 22.7 from the original
Deuteranopia#9CAFE1no green cones; the most common form, about 1% of men; ΔE 24 from the original
Tritanopia#00CBCBno blue cones; rare, and affects men and women equally; ΔE 25 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.05:1WCAG large text: Fail
Contrast with black, large text10.25:1WCAG large text: AAA

Named colours

Sky blue · ΔE 7.5Light skyblue · ΔE 10.9Deep skyblue · ΔE 18.2Light blue · ΔE 18.3Light steelblue · ΔE 20.4Cadetblue · ΔE 21.1
Nearest named CSS colourSky blue (#87CEEB)ΔE 7.54, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E18363
Analogous#63E1C2, #6382E1
Triadic#E163C1, #C1E163
Split complementary#E16382, #E1C263
Tetradic#C263E1, #E18363, #82E163

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#E3F4FA
Lighter +20%#B9E3F1
Lighter +10%#8ED2E9
Darker −10%#38B0D9
Darker −20%#2494BA
Darker −30%#1C728F
Darker −40%#135065
More saturated +25%#4CCCF8
Less saturated −25%#7AB6CA

Channel breakdown

R99
G193
B225
Red99 (38.8%)
Green193 (75.7%)
Blue225 (88.2%)
Hue195.24°
Saturation (HSL)67.74%
Lightness63.53%
Dominant channelBlue
Hex per channelR 63 · G C1 · B E1

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Every value on this page was computed from “63c1e1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.