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Recognised as Colour

#ECFF04

  • #ECFF04
  • Yellow
  • Light
  • Nearest: Yellow

#ECFF04 is a yellow with RGB values 236, 255, 4 and HSL 65°, 100%, 51%. It is a light colour, so black text on it reaches 18.9:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#ECFF04#ECFF04
HEX#ECFF04
RGBrgb(236, 255, 4)
RGB (0–1)0.9255, 1, 0.0157
RGB percentages92.5%, 100%, 1.6%
HSLhsl(64.5, 100%, 50.8%)
HSV / HSBhsv(64.5, 98.4%, 100%)
CMYK7.5%, 0%, 98.4%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer15,531,780
CSS custom property--colour: #ECFF04;

Brightness & contrast

Relative luminance0.89362WCAG 2.x, 0 is black and 1 is white
Perceived brightness234.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 18.87:1
Contrast with white1.11:1WCAG normal text: Fail
Contrast with black18.87:1WCAG normal text: AAA
Greyscale equivalent#E9E9E9
Inverted#1300FB

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFF100no red cones; affects about 1% of men; ΔE 14.6 from the original
Deuteranopia#FFF434no green cones; the most common form, about 1% of men; ΔE 15.8 from the original
Tritanopia#FCEFD9no blue cones; rare, and affects men and women equally; ΔE 85.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.11:1WCAG large text: Fail
Contrast with black, large text18.87:1WCAG large text: AAA

Named colours

Yellow · ΔE 8.1Green yellow · ΔE 25.8Gold · ΔE 29.2Yellow green · ΔE 33.4Chartreuse · ΔE 39.8Lawn green · ΔE 39.9
Nearest named CSS colourYellow (#FFFF00)ΔE 8.07, clearly different but related
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#1704FF
Analogous#FF9504, #6EFF04
Triadic#04ECFF, #FF04EC
Split complementary#046EFF, #9404FF
Tetradic#04FF95, #1704FF, #FF046F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFFD0
Lighter +30%#F8FF9D
Lighter +20%#F4FF6A
Lighter +10%#F0FF37
Darker −10%#C0D000
Darker −20%#919D00
Darker −30%#626A00
Darker −40%#333700
More saturated +25%#ECFF04
Less saturated −25%#D1E023

Channel breakdown

R236
G255
B4
Red236 (92.5%)
Green255 (100%)
Blue4 (1.6%)
Hue64.54°
Saturation (HSL)100%
Lightness50.78%
Dominant channelGreen
Hex per channelR EC · G FF · B 04

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Every value on this page was computed from “ecff04” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.