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Colour

#63B0CF

  • #63B0CF
  • Cyan
  • Dark
  • Nearest: Sky blue

#63B0CF is a cyan with RGB values 99, 176, 207 and HSL 197°, 53%, 60%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#63B0CF#63B0CF
HEX#63B0CF
RGBrgb(99, 176, 207)
RGB (0–1)0.3882, 0.6902, 0.8118
RGB percentages38.8%, 69%, 81.2%
HSLhsl(197.2, 52.9%, 60%)
HSV / HSBhsv(197.2, 52.2%, 81.2%)
CMYK52.2%, 15%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,533,327
CSS custom property--colour: #63B0CF;

Brightness & contrast

Relative luminance0.38208WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.64:1
Contrast with white2.43:1WCAG normal text: Fail
Contrast with black8.64:1WCAG normal text: AAA
Greyscale equivalent#A2A2A2
Inverted#9C4F30

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9FADD1no red cones; affects about 1% of men; ΔE 18.7 from the original
Deuteranopia#90A1CFno green cones; the most common form, about 1% of men; ΔE 20.1 from the original
Tritanopia#1CB9BAno blue cones; rare, and affects men and women equally; ΔE 24.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.43:1WCAG large text: Fail
Contrast with black, large text8.64:1WCAG large text: AAA

Named colours

Sky blue · ΔE 11.2Light skyblue · ΔE 13.5Cadetblue · ΔE 17.7Light steelblue · ΔE 19Light blue · ΔE 19.9Deep skyblue · ΔE 20.1
Nearest named CSS colourSky blue (#87CEEB)ΔE 11.18, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF8263
Analogous#63CFB8, #637ACF
Triadic#CF63B0, #B0CF63
Split complementary#CF637A, #CFB863
Tetradic#B863CF, #CF8263, #7ACF63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D8EBF3
Lighter +20%#B1D8E7
Lighter +10%#8AC4DB
Darker −10%#3C9CC3
Darker −20%#307D9C
Darker −30%#245E75
Darker −40%#183F4E
More saturated +25%#4ABBE9
Less saturated −25%#7CA5B6

Channel breakdown

R99
G176
B207
Red99 (38.8%)
Green176 (69%)
Blue207 (81.2%)
Hue197.22°
Saturation (HSL)52.94%
Lightness60%
Dominant channelBlue
Hex per channelR 63 · G B0 · B CF

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Every value on this page was computed from “63b0cf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.