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Recognised as Colour

#04BFCB

  • #04BFCB
  • Cyan
  • Dark
  • Nearest: Dark turquoise

#04BFCB is a cyan with RGB values 4, 191, 203 and HSL 184°, 96%, 41%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Dark turquoise.

Colour values

#04BFCB#04BFCB
HEX#04BFCB
RGBrgb(4, 191, 203)
RGB (0–1)0.0157, 0.749, 0.7961
RGB percentages1.6%, 74.9%, 79.6%
HSLhsl(183.6, 96.1%, 40.6%)
HSV / HSBhsv(183.6, 98%, 79.6%)
CMYK98%, 5.9%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer311,243
CSS custom property--colour: #04BFCB;

Brightness & contrast

Relative luminance0.41599WCAG 2.x, 0 is black and 1 is white
Perceived brightness161.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.32:1
Contrast with white2.25:1WCAG normal text: Fail
Contrast with black9.32:1WCAG normal text: AAA
Greyscale equivalent#989898
Inverted#FB4034

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#AFB6CCno red cones; affects about 1% of men; ΔE 37.5 from the original
Deuteranopia#98A6CCno green cones; the most common form, about 1% of men; ΔE 38.7 from the original
Tritanopia#00C7C2no blue cones; rare, and affects men and women equally; ΔE 10.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.25:1WCAG large text: Fail
Contrast with black, large text9.32:1WCAG large text: AAA

Named colours

Dark turquoise · ΔE 8Medium turquoise · ΔE 11.2Light seagreen · ΔE 12.3Turquoise · ΔE 19.4Cadetblue · ΔE 20.5Dark cyan · ΔE 20.6
Nearest named CSS colourDark turquoise (#00CED1)ΔE 7.96, clearly different but related
Hue familycyan
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB1004
Analogous#04CB73, #045CCB
Triadic#CB04BF, #BFCB04
Split complementary#CB045C, #CB7304
Tetradic#7304CB, #CB1004, #5CCB04

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9EF7FD
Lighter +30%#6CF3FC
Lighter +20%#3AEFFB
Lighter +10%#08ECFA
Darker −10%#039099
Darker −20%#026167
Darker −30%#013235
Darker −40%#000303
More saturated +25%#00C3CF
Less saturated −25%#1EA8B1

Channel breakdown

R4
G191
B203
Red4 (1.6%)
Green191 (74.9%)
Blue203 (79.6%)
Hue183.62°
Saturation (HSL)96.14%
Lightness40.59%
Dominant channelBlue
Hex per channelR 04 · G BF · B CB

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