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Recognised as Colour

#04ACD5

  • #04ACD5
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#04ACD5 is a cyan with RGB values 4, 172, 213 and HSL 192°, 96%, 43%. It is a dark colour, so black text on it reaches 7.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#04ACD5#04ACD5
HEX#04ACD5
RGBrgb(4, 172, 213)
RGB (0–1)0.0157, 0.6745, 0.8353
RGB percentages1.6%, 67.5%, 83.5%
HSLhsl(191.8, 96.3%, 42.5%)
HSV / HSBhsv(191.8, 98.1%, 83.5%)
CMYK98.1%, 19.2%, 0%, 16.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer306,389
CSS custom property--colour: #04ACD5;

Brightness & contrast

Relative luminance0.34335WCAG 2.x, 0 is black and 1 is white
Perceived brightness150.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.87:1
Contrast with white2.67:1WCAG normal text: Fail
Contrast with black7.87:1WCAG normal text: AAA
Greyscale equivalent#8B8B8B
Inverted#FB532A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#94A8D7no red cones; affects about 1% of men; ΔE 26.9 from the original
Deuteranopia#7D97D5no green cones; the most common form, about 1% of men; ΔE 29.2 from the original
Tritanopia#00B8B9no blue cones; rare, and affects men and women equally; ΔE 24.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.67:1WCAG large text: Fail
Contrast with black, large text7.87:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 14.4Sky blue · ΔE 18.6Light skyblue · ΔE 18.6Steel blue · ΔE 22.2Cadetblue · ΔE 24.1Dark cyan · ΔE 26.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 14.37, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D52D04
Analogous#04D595, #0444D5
Triadic#D504AC, #ACD504
Split complementary#D50443, #D59504
Tetradic#9604D5, #D52D04, #44D504

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A8EDFD
Lighter +30%#76E2FC
Lighter +20%#44D7FB
Lighter +10%#11CDFB
Darker −10%#0384A3
Darker −20%#025B71
Darker −30%#01333F
Darker −40%#000A0D
More saturated +25%#00AED9
Less saturated −25%#1F9CBA

Channel breakdown

R4
G172
B213
Red4 (1.6%)
Green172 (67.5%)
Blue213 (83.5%)
Hue191.77°
Saturation (HSL)96.31%
Lightness42.55%
Dominant channelBlue
Hex per channelR 04 · G AC · B D5

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Every value on this page was computed from “04acd5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.