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Recognised as Colour

#87B5EF

  • #87B5EF
  • Blue
  • Dark
  • Nearest: Light skyblue

#87B5EF is a blue with RGB values 135, 181, 239 and HSL 213°, 76%, 73%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Light skyblue.

Colour values

#87B5EF#87B5EF
HEX#87B5EF
RGBrgb(135, 181, 239)
RGB (0–1)0.5294, 0.7098, 0.9373
RGB percentages52.9%, 71%, 93.7%
HSLhsl(213.5, 76.5%, 73.3%)
HSV / HSBhsv(213.5, 43.5%, 93.7%)
CMYK43.5%, 24.3%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,893,935
CSS custom property--colour: #87B5EF;

Brightness & contrast

Relative luminance0.44431WCAG 2.x, 0 is black and 1 is white
Perceived brightness176.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.89:1
Contrast with white2.12:1WCAG normal text: Fail
Contrast with black9.89:1WCAG normal text: AAA
Greyscale equivalent#AFAFAF
Inverted#784A10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#9FB8F2no red cones; affects about 1% of men; ΔE 6.3 from the original
Deuteranopia#93ADEEno green cones; the most common form, about 1% of men; ΔE 7.6 from the original
Tritanopia#5FC2C9no blue cones; rare, and affects men and women equally; ΔE 34 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.12:1WCAG large text: Fail
Contrast with black, large text9.89:1WCAG large text: AAA

Named colours

Light skyblue · ΔE 13.7Deep skyblue · ΔE 19.4Light steelblue · ΔE 19.4Sky blue · ΔE 20.2Steel blue · ΔE 20.4Cornflower blue · ΔE 21.2
Nearest named CSS colourLight skyblue (#87CEFA)ΔE 13.69, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EFC187
Analogous#87E9EF, #8D87EF
Triadic#EF87B5, #B5EF87
Split complementary#EF8D87, #E9EF87
Tetradic#EF87E9, #EFC187, #87EF8D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#E1EDFB
Lighter +10%#B4D1F5
Darker −10%#5A99E9
Darker −20%#2D7EE3
Darker −30%#1A65C3
Darker −40%#144E96
More saturated +25%#77B3FF
Less saturated −25%#98B7DE

Channel breakdown

R135
G181
B239
Red135 (52.9%)
Green181 (71%)
Blue239 (93.7%)
Hue213.46°
Saturation (HSL)76.47%
Lightness73.33%
Dominant channelBlue
Hex per channelR 87 · G B5 · B EF

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Every value on this page was computed from “87b5ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.