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Recognised as Colour

#91D9DF

  • #91D9DF
  • Cyan
  • Light
  • Nearest: Powder blue

#91D9DF is a cyan with RGB values 145, 217, 223 and HSL 185°, 55%, 72%. It is a light colour, so black text on it reaches 13.2:1 contrast (AAA for normal text). The nearest named colour is Powder blue.

Colour values

#91D9DF#91D9DF
HEX#91D9DF
RGBrgb(145, 217, 223)
RGB (0–1)0.5686, 0.851, 0.8745
RGB percentages56.9%, 85.1%, 87.5%
HSLhsl(184.6, 54.9%, 72.2%)
HSV / HSBhsv(184.6, 35%, 87.5%)
CMYK35%, 2.7%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer9,558,495
CSS custom property--colour: #91D9DF;

Brightness & contrast

Relative luminance0.60973WCAG 2.x, 0 is black and 1 is white
Perceived brightness199 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 13.19:1
Contrast with white1.59:1WCAG normal text: Fail
Contrast with black13.19:1WCAG normal text: AAA
Greyscale equivalent#CACACA
Inverted#6E2620

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#CFD3E0no red cones; affects about 1% of men; ΔE 22.3 from the original
Deuteranopia#C1C9DFno green cones; the most common form, about 1% of men; ΔE 22.6 from the original
Tritanopia#73DEDBno blue cones; rare, and affects men and women equally; ΔE 10.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.59:1WCAG large text: Fail
Contrast with black, large text13.19:1WCAG large text: AAA

Named colours

Powder blue · ΔE 8Pale turquoise · ΔE 8.6Light blue · ΔE 10.2Sky blue · ΔE 13.1Medium turquoise · ΔE 17.5Light cyan · ΔE 20.1
Nearest named CSS colourPowder blue (#B0E0E6)ΔE 8.03, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF9791
Analogous#91DFBE, #91B2DF
Triadic#DF91D9, #D9DF91
Split complementary#DF91B2, #DFBE91
Tetradic#BE91DF, #DF9791, #B2DF91

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#E0F4F6
Lighter +10%#B9E7EA
Darker −10%#69CBD4
Darker −20%#42BEC8
Darker −30%#309DA7
Darker −40%#25787F
More saturated +25%#7FE8F1
Less saturated −25%#A3CACD

Channel breakdown

R145
G217
B223
Red145 (56.9%)
Green217 (85.1%)
Blue223 (87.5%)
Hue184.62°
Saturation (HSL)54.93%
Lightness72.16%
Dominant channelBlue
Hex per channelR 91 · G D9 · B DF

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Every value on this page was computed from “91d9df” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.