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Recognised as Colour

#63A1CD

  • #63A1CD
  • Blue
  • Dark
  • Nearest: Steel blue

#63A1CD is a blue with RGB values 99, 161, 205 and HSL 205°, 51%, 60%. It is a dark colour, so black text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#63A1CD#63A1CD
HEX#63A1CD
RGBrgb(99, 161, 205)
RGB (0–1)0.3882, 0.6314, 0.8039
RGB percentages38.8%, 63.1%, 80.4%
HSLhsl(204.9, 51.5%, 59.6%)
HSV / HSBhsv(204.9, 51.7%, 80.4%)
CMYK51.7%, 21.5%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,529,485
CSS custom property--colour: #63A1CD;

Brightness & contrast

Relative luminance0.3255WCAG 2.x, 0 is black and 1 is white
Perceived brightness151.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.51:1
Contrast with white2.8:1WCAG normal text: Fail
Contrast with black7.51:1WCAG normal text: AAA
Greyscale equivalent#979797
Inverted#9C5E32

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8EA1CFno red cones; affects about 1% of men; ΔE 12.4 from the original
Deuteranopia#7F96CCno green cones; the most common form, about 1% of men; ΔE 13.2 from the original
Tritanopia#27ACB0no blue cones; rare, and affects men and women equally; ΔE 29.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.8:1WCAG large text: Fail
Contrast with black, large text7.51:1WCAG large text: AAA

Named colours

Steel blue · ΔE 12.4Light skyblue · ΔE 16.2Sky blue · ΔE 18.5Deep skyblue · ΔE 19.2Light slate grey · ΔE 20Light steelblue · ΔE 20.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 12.41, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CD8F63
Analogous#63CDC4, #636CCD
Triadic#CD63A1, #A1CD63
Split complementary#CD636C, #CDC463
Tetradic#C463CD, #CD8F63, #6CCD63

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FDFEFF
Lighter +30%#D7E7F2
Lighter +20%#B0D0E6
Lighter +10%#8AB8D9
Darker −10%#3D8AC0
Darker −20%#316E99
Darker −30%#255272
Darker −40%#18364C
More saturated +25%#49A5E7
Less saturated −25%#7D9DB3

Channel breakdown

R99
G161
B205
Red99 (38.8%)
Green161 (63.1%)
Blue205 (80.4%)
Hue204.91°
Saturation (HSL)51.46%
Lightness59.61%
Dominant channelBlue
Hex per channelR 63 · G A1 · B CD

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Every value on this page was computed from “63a1cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.