Nerdulator> put something in

Recognised as Colour

#28ADEF

  • #28ADEF
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#28ADEF is a cyan with RGB values 40, 173, 239 and HSL 200°, 86%, 55%. It is a dark colour, so black text on it reaches 8.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#28ADEF#28ADEF
HEX#28ADEF
RGBrgb(40, 173, 239)
RGB (0–1)0.1569, 0.6784, 0.9373
RGB percentages15.7%, 67.8%, 93.7%
HSLhsl(199.9, 86.1%, 54.7%)
HSV / HSBhsv(199.9, 83.3%, 93.7%)
CMYK83.3%, 27.6%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,665,967
CSS custom property--colour: #28ADEF;

Brightness & contrast

Relative luminance0.3657WCAG 2.x, 0 is black and 1 is white
Perceived brightness156.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.31:1
Contrast with white2.53:1WCAG normal text: Fail
Contrast with black8.31:1WCAG normal text: AAA
Greyscale equivalent#959595
Inverted#D75210

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8DADF2no red cones; affects about 1% of men; ΔE 19.3 from the original
Deuteranopia#739BEEno green cones; the most common form, about 1% of men; ΔE 21.6 from the original
Tritanopia#00BEC4no blue cones; rare, and affects men and women equally; ΔE 37.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.53:1WCAG large text: Fail
Contrast with black, large text8.31:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 8Light skyblue · ΔE 19.1Steel blue · ΔE 19.5Cornflower blue · ΔE 22.8Sky blue · ΔE 24.8Dodgerblue · ΔE 31.1
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 8.01, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EF6A28
Analogous#28EFCE, #2849EF
Triadic#EF28AD, #ADEF28
Split complementary#EF2849, #EFCE28
Tetradic#CE28EF, #EF6A28, #49EF28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E6F5FD
Lighter +30%#B6E3FA
Lighter +20%#87D1F6
Lighter +10%#57BFF3
Darker −10%#1093D4
Darker −20%#0C72A5
Darker −30%#095175
Darker −40%#053046
More saturated +25%#18B2FF
Less saturated −25%#45A3D2

Channel breakdown

R40
G173
B239
Red40 (15.7%)
Green173 (67.8%)
Blue239 (93.7%)
Hue199.9°
Saturation (HSL)86.15%
Lightness54.71%
Dominant channelBlue
Hex per channelR 28 · G AD · B EF

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 “28adef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.