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Recognised as Colour

#63A5BF

  • #63A5BF
  • Cyan
  • Dark
  • Nearest: Cadetblue

#63A5BF is a cyan with RGB values 99, 165, 191 and HSL 197°, 42%, 57%. It is a dark colour, so black text on it reaches 7.7:1 contrast (AAA for normal text). The nearest named colour is Cadetblue.

Colour values

#63A5BF#63A5BF
HEX#63A5BF
RGBrgb(99, 165, 191)
RGB (0–1)0.3882, 0.6471, 0.749
RGB percentages38.8%, 64.7%, 74.9%
HSLhsl(197, 41.8%, 56.9%)
HSV / HSBhsv(197, 48.2%, 74.9%)
CMYK48.2%, 13.6%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,530,495
CSS custom property--colour: #63A5BF;

Brightness & contrast

Relative luminance0.33325WCAG 2.x, 0 is black and 1 is white
Perceived brightness151.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.66:1
Contrast with white2.74:1WCAG normal text: Fail
Contrast with black7.66:1WCAG normal text: AAA
Greyscale equivalent#999999
Inverted#9C5A40

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#97A2C0no red cones; affects about 1% of men; ΔE 17 from the original
Deuteranopia#8998BFno green cones; the most common form, about 1% of men; ΔE 17.8 from the original
Tritanopia#34ADADno blue cones; rare, and affects men and women equally; ΔE 20.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.74:1WCAG large text: Fail
Contrast with black, large text7.66:1WCAG large text: AAA

Named colours

Cadetblue · ΔE 14.1Sky blue · ΔE 14.9Light slate grey · ΔE 16.9Light skyblue · ΔE 17.8Slate grey · ΔE 19Light steelblue · ΔE 19.5
Nearest named CSS colourCadetblue (#5F9EA0)ΔE 14.1, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF7D63
Analogous#63BFAB, #6377BF
Triadic#BF63A5, #A5BF63
Split complementary#BF6377, #BFAB63
Tetradic#AB63BF, #BF7D63, #77BF63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4F8FA
Lighter +30%#CFE4EC
Lighter +20%#ABCFDD
Lighter +10%#87BACE
Darker −10%#468DA9
Darker −20%#376F85
Darker −30%#285161
Darker −40%#19333D
More saturated +25%#48B1DB
Less saturated −25%#7F99A3

Channel breakdown

R99
G165
B191
Red99 (38.8%)
Green165 (64.7%)
Blue191 (74.9%)
Hue196.96°
Saturation (HSL)41.82%
Lightness56.86%
Dominant channelBlue
Hex per channelR 63 · G A5 · B BF

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Every value on this page was computed from “63a5bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.