Nerdulator> put something in

Recognised as Colour

#81B3D2

  • #81B3D2
  • Blue
  • Dark
  • Nearest: Sky blue

#81B3D2 is a blue with RGB values 129, 179, 210 and HSL 203°, 47%, 66%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#81B3D2#81B3D2
HEX#81B3D2
RGBrgb(129, 179, 210)
RGB (0–1)0.5059, 0.702, 0.8235
RGB percentages50.6%, 70.2%, 82.4%
HSLhsl(203, 47.4%, 66.5%)
HSV / HSBhsv(203, 38.6%, 82.4%)
CMYK38.6%, 14.8%, 0%, 17.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,500,178
CSS custom property--colour: #81B3D2;

Brightness & contrast

Relative luminance0.4156WCAG 2.x, 0 is black and 1 is white
Perceived brightness169.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.31:1
Contrast with white2.26:1WCAG normal text: Fail
Contrast with black9.31:1WCAG normal text: AAA
Greyscale equivalent#ABABAB
Inverted#7E4C2D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#A5B2D4no red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#9AA9D2no green cones; the most common form, about 1% of men; ΔE 12.8 from the original
Tritanopia#63BBBDno blue cones; rare, and affects men and women equally; ΔE 20.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.26:1WCAG large text: Fail
Contrast with black, large text9.31:1WCAG large text: AAA

Named colours

Sky blue · ΔE 10.6Light skyblue · ΔE 12.1Light steelblue · ΔE 12.2Light blue · ΔE 16.4Light slate grey · ΔE 18.8Cadetblue · ΔE 19.8
Nearest named CSS colourSky blue (#87CEEB)ΔE 10.61, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D2A081
Analogous#81D2C8, #818BD2
Triadic#D281B3, #B3D281
Split complementary#D2818B, #D2C881
Tetradic#C881D2, #D2A081, #8BD281

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#F2F7FA
Lighter +20%#CCE0ED
Lighter +10%#A7CADF
Darker −10%#5B9CC5
Darker −20%#3E84AF
Darker −30%#316789
Darker −40%#244B63
More saturated +25%#6CB8E7
Less saturated −25%#96AEBD

Channel breakdown

R129
G179
B210
Red129 (50.6%)
Green179 (70.2%)
Blue210 (82.4%)
Hue202.96°
Saturation (HSL)47.37%
Lightness66.47%
Dominant channelBlue
Hex per channelR 81 · G B3 · B D2

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “81b3d2” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.