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Recognised as Colour

#F9FF00

  • #F9FF00
  • Yellow
  • Light
  • Nearest: Yellow

#F9FF00 is a yellow with RGB values 249, 255, 0 and HSL 61°, 100%, 50%. It is a light colour, so black text on it reaches 19.3:1 contrast (AAA for normal text). The nearest named colour is Yellow.

Colour values

#F9FF00#F9FF00
HEX#F9FF00
RGBrgb(249, 255, 0)
RGB (0–1)0.9765, 1, 0
RGB percentages97.6%, 100%, 0%
HSLhsl(61.4, 100%, 50%)
HSV / HSBhsv(61.4, 100%, 100%)
CMYK2.4%, 0%, 100%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,383,744
CSS custom property--colour: #F9FF00;

Brightness & contrast

Relative luminance0.9166WCAG 2.x, 0 is black and 1 is white
Perceived brightness238.1 of 255ITU-R BT.601 weighting
Light or darkLight
Best text colour on this backgroundBlackcontrast 19.33:1
Contrast with white1.09:1WCAG normal text: Fail
Contrast with black19.33:1WCAG normal text: AAA
Greyscale equivalent#EBEBEB
Inverted#0600FF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#FFF300no red cones; affects about 1% of men; ΔE 8.8 from the original
Deuteranopia#FFF832no green cones; the most common form, about 1% of men; ΔE 10.2 from the original
Tritanopia#FFEED9no blue cones; rare, and affects men and women equally; ΔE 85.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text1.09:1WCAG large text: Fail
Contrast with black, large text19.33:1WCAG large text: AAA

Named colours

Yellow · ΔE 2.6Gold · ΔE 25.1Green yellow · ΔE 31.3Yellow green · ΔE 36.7Chartreuse · ΔE 45.3Lawn green · ΔE 45.4
Nearest named CSS colourYellow (#FFFF00)ΔE 2.56, a close match
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#0600FF
Analogous#FF8500, #7AFF00
Triadic#00F9FF, #FF00F9
Split complementary#007AFF, #8500FF
Tetradic#00FF85, #0600FF, #FF007A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FEFFCC
Lighter +30%#FDFF99
Lighter +20%#FBFF66
Lighter +10%#FAFF33
Darker −10%#C7CC00
Darker −20%#959900
Darker −30%#646600
Darker −40%#323300
More saturated +25%#F9FF00
Less saturated −25%#DBDF20

Channel breakdown

R249
G255
B0
Red249 (97.6%)
Green255 (100%)
Blue0 (0%)
Hue61.41°
Saturation (HSL)100%
Lightness50%
Dominant channelGreen
Hex per channelR F9 · G FF · B 00

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Every value on this page was computed from “f9ff00” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.