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Colour

#51AFE6

  • #51AFE6
  • Blue
  • Dark
  • Nearest: Deep skyblue

#51AFE6 is a blue with RGB values 81, 175, 230 and HSL 202°, 75%, 61%. It is a dark colour, so black text on it reaches 8.6:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#51AFE6#51AFE6
HEX#51AFE6
RGBrgb(81, 175, 230)
RGB (0–1)0.3176, 0.6863, 0.902
RGB percentages31.8%, 68.6%, 90.2%
HSLhsl(202.1, 74.9%, 61%)
HSV / HSBhsv(202.1, 64.8%, 90.2%)
CMYK64.8%, 23.9%, 0%, 9.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,353,446
CSS custom property--colour: #51AFE6;

Brightness & contrast

Relative luminance0.38122WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.62:1
Contrast with white2.43:1WCAG normal text: Fail
Contrast with black8.62:1WCAG normal text: AAA
Greyscale equivalent#9F9F9F
Inverted#AE5019

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#95AEE9no red cones; affects about 1% of men; ΔE 17.3 from the original
Deuteranopia#819FE5no green cones; the most common form, about 1% of men; ΔE 19.1 from the original
Tritanopia#00BDC2no blue cones; rare, and affects men and women equally; ΔE 33.9 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 text8.62:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 10.4Light skyblue · ΔE 13.7Steel blue · ΔE 17.5Sky blue · ΔE 18.7Light steelblue · ΔE 25.1Cornflower blue · ΔE 25.3
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 10.39, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E68851
Analogous#51E6D3, #5165E6
Triadic#E651AF, #AFE651
Split complementary#E65165, #E6D251
Tetradic#D251E6, #E68851, #65E651

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#D7EDF9
Lighter +20%#AAD8F3
Lighter +10%#7EC4EC
Darker −10%#249AE0
Darker −20%#1A7DB7
Darker −30%#145E8A
Darker −40%#0D405E
More saturated +25%#38B6FF
Less saturated −25%#6AA8CD

Channel breakdown

R81
G175
B230
Red81 (31.8%)
Green175 (68.6%)
Blue230 (90.2%)
Hue202.15°
Saturation (HSL)74.87%
Lightness60.98%
Dominant channelBlue
Hex per channelR 51 · G AF · B E6

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Every value on this page was computed from “51afe6” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.