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Recognised as Colour

#04DDFF

  • #04DDFF
  • Cyan
  • Light
  • Nearest: Dark turquoise

#04DDFF is a cyan with RGB values 4, 221, 255 and HSL 188°, 100%, 51%. It is a light colour, so black text on it reaches 12.8:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#04DDFF#04DDFF
HEX#04DDFF
RGBrgb(4, 221, 255)
RGB (0–1)0.0157, 0.8667, 1
RGB percentages1.6%, 86.7%, 100%
HSLhsl(188.1, 100%, 50.8%)
HSV / HSBhsv(188.1, 98.4%, 100%)
CMYK98.4%, 13.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer318,975
CSS custom property--colour: #04DDFF;

Brightness & contrast

Relative luminance0.58959WCAG 2.x, 0 is black and 1 is white
Perceived brightness190 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 12.79:1
Contrast with white1.64:1WCAG normal text: Fail
Contrast with black12.79:1WCAG normal text: AAA
Greyscale equivalent#B1B1B1
Inverted#FB2200

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#C5D5FFno red cones; affects about 1% of men; ΔE 36.9 from the original
Deuteranopia#A9C1FFno green cones; the most common form, about 1% of men; ΔE 39.1 from the original
Tritanopia#00EAE8no blue cones; rare, and affects men and women equally; ΔE 21.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text1.64:1WCAG large text: Fail
Contrast with black, large text12.79:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 18.2Sky blue · ΔE 19.5Medium turquoise · ΔE 21.7Light skyblue · ΔE 21.8Deep skyblue · ΔE 21.9Aqua · ΔE 23.6
Nearest named CSS colourDark turquoise (#00CED1)ΔE 18.23, a distinctly different colour
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF2604
Analogous#04FFA3, #0460FF
Triadic#FF04DD, #DDFF04
Split complementary#FF0460, #FFA304
Tetradic#A304FF, #FF2604, #60FF04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D0F9FF
Lighter +30%#9DF2FF
Lighter +20%#6AEBFF
Lighter +10%#37E4FF
Darker −10%#00B4D0
Darker −20%#00889D
Darker −30%#005C6A
Darker −40%#003037
More saturated +25%#04DDFF
Less saturated −25%#23C6E0

Channel breakdown

R4
G221
B255
Red4 (1.6%)
Green221 (86.7%)
Blue255 (100%)
Hue188.13°
Saturation (HSL)100%
Lightness50.78%
Dominant channelBlue
Hex per channelR 04 · G DD · B FF

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