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Colour

#28ACFF

  • #28ACFF
  • Blue
  • Dark
  • Nearest: Deep skyblue

#28ACFF is a blue with RGB values 40, 172, 255 and HSL 203°, 100%, 58%. It is a dark colour, so black text on it reaches 8.4:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#28ACFF#28ACFF
HEX#28ACFF
RGBrgb(40, 172, 255)
RGB (0–1)0.1569, 0.6745, 1
RGB percentages15.7%, 67.5%, 100%
HSLhsl(203.2, 100%, 57.8%)
HSV / HSBhsv(203.2, 84.3%, 100%)
CMYK84.3%, 32.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,665,727
CSS custom property--colour: #28ACFF;

Brightness & contrast

Relative luminance0.37176WCAG 2.x, 0 is black and 1 is white
Perceived brightness158.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.44:1
Contrast with white2.49:1WCAG normal text: Fail
Contrast with black8.44:1WCAG normal text: AAA
Greyscale equivalent#969696
Inverted#D75300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#84AFFFno red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#679CFDno green cones; the most common form, about 1% of men; ΔE 17.2 from the original
Tritanopia#00C0CAno blue cones; rare, and affects men and women equally; ΔE 45.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.49:1WCAG large text: Fail
Contrast with black, large text8.44:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 15.3Cornflower blue · ΔE 16.1Dodgerblue · ΔE 21.8Steel blue · ΔE 23.8Light skyblue · ΔE 25.8Sky blue · ΔE 32.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 15.29, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF7B28
Analogous#28FFE6, #2841FF
Triadic#FF28AC, #ACFF28
Split complementary#FF2841, #FFE628
Tetradic#E628FF, #FF7B28, #41FF28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F4FBFF
Lighter +30%#C1E7FF
Lighter +20%#8ED3FF
Lighter +10%#5BC0FF
Darker −10%#0096F4
Darker −20%#0076C1
Darker −30%#00578E
Darker −40%#00385B
More saturated +25%#28ACFF
Less saturated −25%#43A6E4

Channel breakdown

R40
G172
B255
Red40 (15.7%)
Green172 (67.5%)
Blue255 (100%)
Hue203.16°
Saturation (HSL)100%
Lightness57.84%
Dominant channelBlue
Hex per channelR 28 · G AC · B FF

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Every value on this page was computed from “28acff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.